Book about a girl who can get out of this juvie place but she has to pass these challenges to get out

[✨vera✨]

So I read this book about a year ago and now I really want to read it again. There's this girl who's in a juvenile detention type of place because she murdered someone. Now she can finally get out but she has to pass these challenges to get out. The first challenge is that she has to climb a rope that's gonna be lit on fire. The second challenge is having to be locked in a room with a lot of delicious food but it's poisoned and then the third challenge is having to kill someone.

The book was really suspenseful and the cliffhangers are immaculate. I just don't know the title or the author of the book. I would consider it a YA thriller book.

[Tab]

Do you remember the cover?
Time period/location story takes place?
Any other characters, like friends, family, other people in the detention place with her?
Who did she kill?

[Lobstergirl, au gratin]

Vera left the group. Moving to Abandoned.