7 days by Eve Ainsworth

As the title suggests, this book is set over seven miserable days for Jessica who lives with her mum and younger sister Hollie on an estate. Their mum works as a cleaner and they can't afford new clothes and food etc is sparse. Not just because Jessica eats a lot of the wrong foods choosing a packet of biscuits over toast etc as a meal.
Her dad isn't around but instead is off living a new life with his girlfriend and new baby.
But poor Jessica is in a living nightmare at school, aware of the bullies, Kez, Marnie, Lois and Hannah.
They belittle her and call her fat, Stig because of the state of her, push her and talk about her online in mean ways. At her school, Philip is her friend, Hannah is an old friend from primary days and Lyn knows her from where she used to live. Yet Hannah and Lyn are friends with her bullies too and can't risk being seen with her.

We also see Kez's point of view on the situation and we see how she thinks digs about Marnie. She also doesn't want to he like her mum whom has a drunk abusive husband and loves Marnie and her mum's relationship wishing her and her mum were like that. She's jealous and angry at her life but bullying gives her power.

An upcoming party at Lyn's means the girls hatch a plan against Jessica after Kez sees Lyn and Jess together which results in dangerous situations for both girls.

This is an essential read about the heartbreaking way school can be for some pupils and how bullying can break someone and how they can overcome it.