Maybe this is a phase she has hit in the process.I guess it is different for everyone.Could be guilt,emotional numbing.Do you treasure your friendship beyond the intimacy? If so try to be her friend for a while.Is she avoiding you as well?I would drop a short line...maybe a card once a week....thinking of you.Take good care of your self...something not sure.Just be a source of support,and try to busy yourself to give it some time.Even if you're climbing the walls.(Best attempt to help,but I feel lame)