A 15-year-old's suicide note has left members of her Pickerington, Ohio community wondering what they could have done to prevent her from taking her own life.

The New York Daily News reports that Cora Delille's last written words included the phrase, "thanks for all the pain."

Delille was found last week in her bedroom. Her note mentioned some of those who she said bullied her by name. One of the names was an ex-boyfriend who broke up with her the night before her death.

But Delille kept the pain she suffered hidden from her teachers and parents, according to the Columbus Dispatch.

"She mentioned here and there when kids made fun of her. She didn’t clue me in to how bad it was,” Amy Hall, Delille's mother said.

Her note also mentioned that she felt like her father and stepfather did not care about her.

Police interviewed the students mentioned in Delille's suicide note, but they told the Dispatch that nothing the teens did, which included name-calling and rumor-starting, is worthy of criminal prosecution.