Princess, I'm so sorry this happened. The distance does make it more difficult. I like both Lara and David's suggestions. I'd go visit her. And those texts are a good idea too. I think she needs to know how much you care for and love her. Luckily, I'm near my daughter and she went through a horrible episode a year or more ago. And she didn't want to talk about it. But I let her know over and over how much I loved her and wanted to help her. I was able to get her to 'confess' to what was going on and coaxed her into going to a good therapist.
Thank goodness it helped. I tell her every day that I love her.