SOLVED. Grown blogger telling family story to journalist about gaslighting older sister -- her entire family is dead. Girl's nickname was "monkey." [s]

[Sorcia]

Spoiler: The younger sister, who has changed her name and now blogs about crimes, was tricked into poisoning her entire family by the older, suicidal and manipulative sister. She poisons red sauce for pasta, which she never eats. Then she sits with their corpses for days until an aunt or someone comes by the house. All of this is told in a slow reveal as she tells her story years later to a journalist. I believe it came out fairly recently.

[Megan]

That sounds like A Head Full of Ghosts by Paul Tremblay.

[Sorcia]

YAS. Thank you!!

[Megan]

You're welcome :)

[Bargle]

Clicky for book. A Head Full of Ghosts

[Andria]

Love this book, but it's adult, not YA. I'll change the heading.

[Myst]

Andria wrote: "Love this book, but it's adult, not YA. I'll change the heading."

I was going to say while I haven't read it, I'm 99% sure it's not children's/YA.

[Sorcia]

You're right -- I'm not sure why I thought it was YA.