This question contains spoilers… (view spoiler)[Did they ever find Erica?

Erica vanished near the end of the book, and there was no confirmation that she was found. She did have a gun with her with only one bullet, which I assumed she might have used on herself when the police force did locate her, but I'm not entirely sure, and I haven't read the second book yet, so any confirmation about her whereabouts would be appreciated. (hide spoiler)]