AITA #1: Am I the Asshole for Not Calling my Depressed Friend?

I discovered r/AmITheAsshole on Reddit and I just can't get enough of it. In this story, there are two MAJOR missing puzzle pieces that would do wonders to solving the problem. Thanks for hanging out with me for the first episode of AITA (Unframe of Mind Edition). What do you think? Is she the asshole?

Original Reddit Post discussed: https://www.reddit.com/r/AmItheAsshole/comments/1cfk9of/aita_for_not_reaching_out_to_my_depressed_friend/