<human>: Can you condense the text into a few key points?

I'll try to keep this short and ambiguous because she is a redditor too though the name I knew her as on reddit is deleted now. 

I think a friend of mine just broke up with me in a rather painful way and I'm not sure what I did to deserve it. I've tried messaging her over our usual channels (gchat, facebook, text, voicemail) and have had no response. We have a mutual friend who I asked for help but he refused to on the ground that it was unfair to put him in the middle of this (I'm not even sure what this is). 

I'm really heartbroken. I don't know what to do or how else I should handle this. I haven't been able to bring myself to write a full email asking what's going on because I think it will mean the end. Should I just let it be and see if she makes contact or try reaching out one more time?
<bot>: Long-term friend cut off all communication with no prior warning/reason. Do I continue to try to reach out?