Amber Grant: The Fractured Mother in Just for the Summer

Overview

Amber Grant is Emma’s emotionally volatile mother, a woman whose unchecked mental health struggles and possessive love shape her daughter’s entire worldview. She appears charming and magnetic when stable, but her manic episodes, chronic instability, and selfish choices make her a central source of trauma in Emma’s life. The author deliberately leaves Amber’s diagnosis unnamed, reflecting the real-world ambiguity of such conditions, while confirming that abandonment fear drives her self-destructive cycle.

Plot Role

Amber re-enters Emma’s life at the start of the novel by contacting her after two years of silence, claiming she wants to visit. She soon attaches herself to Neil, a wealthy surgeon from Emma’s social circle, and moves into his lake house. Over several months, Amber’s behavior deteriorates: she stops working, steals Neil’s valuables, and throws a violent tantrum when Neil works late, culminating in her smashing his medical award. Neil eventually kicks her out after she refuses inpatient treatment. The turning point comes when Emma discovers through a DNA test that Amber had given birth to a half‑brother, Daniel, and that Amber’s parents—who raised Daniel in a loving home—had been alive until eight years ago. Emma confronts her mother and learns that Amber deliberately hid Emma from her grandparents out of possessive love, refusing to let them have her even though they would have given Emma a stable childhood. This revelation forces Emma to cut Amber off permanently.

Motivations and Traits

Amber’s primary motivation is a deep‑seated fear of abandonment, which triggers manic acting‑out whenever she perceives rejection. She lacks self‑awareness and refuses professional help, repeating a cycle of unstable relationships that inevitably collapse. Her love for Emma is possessive: she would rather leave Emma in foster care than risk losing her to her own parents, who would have provided permanence. Amber is also financially irresponsible, using her inheritance from selling the family home to fund her lifestyle until it runs out, then latching onto men like Neil for support. Despite moments of charm, she consistently prioritizes her own needs over Emma’s well‑being.

Chronological Arc

Prologue‑Chapter 2: Emma mentions her mother’s disappearance; Maddy warns that Amber “always comes back” like black mold.
Chapter 9: Amber arrives in Minnesota, quickly ingratiates herself with Neil, ignoring Emma during the pool party.
Chapter 29: Amber throws a violent tantrum at Neil’s house, smashing his award; Neil hugs her instead of striking her, but the pattern is clear.
Chapter 39: Maddy calls Justin about Amber throwing clothes on Neil’s lawn; Emma dissociates (“small”) during the cleanup.
Chapter 40: Amber and Neil split after she refuses treatment; Emma discovers Daniel and the family house.
Chapter 41: Emma confronts Amber, who admits she kept Emma away from her grandparents out of selfishness. Emma walks out, severing ties forever.

Relationships

With Emma: A toxic, neglectful bond. Amber sees Emma as an extension of herself, not an independent person. She lies about the family, withholds financial support, and disappears for years, yet demands Emma’s care when she resurface.
With Neil: A desperate attempt at stability. Amber uses Neil’s resources but cannot handle his work‑hour demands, leading to hysterical outbursts that echo Emma’s childhood. Neil offers her treatment; she refuses.
With Daniel: Amber gave him up as a baby, and her parents raised him. She never told Emma he existed, reinforcing her pattern of hiding the truth.
With Maddy: Maddy loathes Amber and repeatedly warns Emma to cut her off. Maddy functions as the reader’s voice of fury.
With Justin: Amber is largely indifferent to Justin, but her instability creates crises that pull him into Emma’s orbit, deepening their bond.

Key Decisions and Consequences

Decision: To keep Emma away from her parents (the Grants). Consequence: Emma grows up in foster care, never knowing a stable family, while Daniel enjoys a warm childhood in the family home.
Decision: To refuse inpatient treatment after Neil offers it. Consequence: Neil ends the relationship, leaving Amber homeless and penniless again, and Emma loses any hope of reconciliation.
Decision: To steal from Neil. Consequence: Accelerates the breakup and confirms Emma’s fear that her mother cannot change.
Decision: To lie about Daniel for decades. Consequence: When the truth emerges, Emma’s trust is shattered, and she permanently isolates herself from her mother.

Theme and Symbol Connections

Amber is the embodiment of transience vs. permanence. Her roses—perfume, wilting flowers, an unfinished mural—are fleeting, while the roses at Grant House are carved into wood and tattooed on Daniel’s arms, representing stability. The island metaphor (Emma’s life on Big Island) mirrors Amber’s isolation: both women retreat from connection, but Amber does so destructively. The curse of failed relationships is actually a self‑fulfilling prophecy for Amber; she drives people away because she expects to be left. Her lack of emotional vulnerability prevents healing, and her family responsibility is repeatedly abdicated. Finally, the theme of power of friendship is highlighted by Maddy and Justin who push back against Amber’s influence.

Book‑Club Questions and Answers

Why does Amber refuse Neil’s offer of treatment even when she has every resource?
Answer: Amber lacks the self‑awareness to admit anything is wrong. As the author explains, she repeats her cycle because she cannot confront her own flaws, preferring to blame others rather than seek help.
How does Amber’s “curse” differ from Emma’s?
Answer: Emma’s curse is a pattern of partners moving on; Amber’s “curse” is active self‑sabotage. Emma eventually breaks her cycle by addressing her trauma, while Amber refuses growth, ensuring her relationships always fail.
What does Amber’s possession of the Grant house tell us about her priorities?
Answer: She inherited a half‑million‑dollar house from her parents but sold it for cash instead of providing a stable home for Emma. This shows she values immediate gratification over her daughter’s security.
Why does Amber hide Emma from her parents?
Answer: She admits that her parents would have kept Emma, and she couldn’t bear to lose her child permanently. It is a possessive love—she would rather Emma suffer than be raised by someone else.
Could Amber have been a better mother if she had different circumstances?
Answer: The novel suggests no. Even when given money, housing, and a caring partner (Neil), Amber’s choices remain destructive. Her problems are internal, not situational. Emma’s realization that her mother’s neglect was a deliberate choice, not a product of hardship, confirms this.