Island Of A Broken Girl

It was just supposed to be a fun vacation with five best friends on a private Greek island. That's what Alexis Kathan thought before one of her friends, Penny Goode, was found dead in her bed.
For some reason, they can't contact the mainland, and they'll have to wait a couple of days for help to arrive. Until then, Alexis will try to solve Penny's death, and try to survive from her so-called friends. Tellie Hollows, Odetta Johnston, and Lyspie Lee. Alexis knows that her friends are suspects.
But as the days wear on, she finds Penny's diary, all of her secrets. At this point, Alexis doesn't even know if her broken version of Penelope Goode is real or fake.
Who will survive?
***
"Den chreiázetai na me ftiáxoun!" Penny said in Greek. She had Greek heritage, and so did Odetta, but they were both born in Canada. Alexis had memorized their most common statement during fights. "Den chreiázetai na me ftiáxoun" loosely translated to "I do not need to be fixed."
That's because Penny didn't want to be fixed, that's the problem.