Edwina

After Aleta's parents divorce, she splits her time between them. Then her father finds a girlfriend whose daughter moves into Aleta's room. She is rejected, angry and feeling unwanted and worthless.
Edwina arrives. Since only Aleta can hear or see Edwina, life gets complicated as she tries to keep Edwina a secret.
The problem is that Edwina hates being bored. She starts making sure Aleta's life stays interesting, a little too interesting. Aleta finds her life has taken a dangerous turn and hopes Edwina can help her turn it around again.