I'm not sure I understand.. why did you drop her from Skype and Facebook? Because she didn't reply to you? Because if that's the case, then yeah, it wasn't a really good idea :/

I understand dealing with a suicidal friend can be hard, but all you can really do is support her when she needs it. That's all you can do, really, especially since you're in two different states. The rest is up to her.. you did a good thing by giving her a therapist's address.