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Books › Marshmallow Skye by Cathy Cassidy

Cover of Marshmallow Skye by Cathy Cassidy

Marshmallow Skye by Cathy Cassidy

277 pages

A sweet, vintage-tinted journey of a girl learning to shine outside her sister's shadow.

What it feels like

Reading this book feels like rummaging through a trunk of vintage clothes on a rainy afternoon, cozy, slightly nostalgic, and full of hidden treasures. The narrative moves at a brisk, engaging pace, perfectly capturing the bittersweet turbulence of early adolescence and the specific ache of feeling second-best. The prose is warm and conversational, wrapping the reader in an earnest exploration of identity and sibling dynamics. It balances the sting of first crushes and jealousy with a comforting, sunlit optimism. Pre-teens who love character-driven stories about finding one's own unique sparkle will devour this gentle, relatable tale. It is a comforting reminder that everyone has their own distinct way to shine, even when standing next to someone blindingly bright.

Mood
  • cozy
  • bittersweet
  • nostalgic
  • sweet
Tone
  • earnest
  • relatable
  • gentle
  • hopeful
Pace
brisk
Themes
sibling rivalry · finding individuality · first crushes · living in a shadow · self-acceptance
The writing
Accessible, warm, and conversational, sprinkled with quirky, vintage-inspired aesthetic details.
The arc
Moves from feelings of inadequacy and quiet jealousy to a warm, confident embrace of self-worth.
Who it's for
Pre-teens and young teens navigating their own identity crises, sibling dynamics, or the sting of first crushes.
Content notes
  • sibling conflict
  • mild insecurity

About the book

Skye and Summer Tanberry are identical twins, and Skye loves her sister Summer more than anyone else in the world. They do everything together, but lately Skye's been feeling like second-best - it's the story of her life. And when her friend Alfie confesses he's fallen not for her, but for Summer, it hurts. Skye wants to be her own person, but with an effortlessly cool twin, how can she? And will Skye ever step out of Summer's shadow and find her own chance to shine?

Description from Open Library.

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