Questions: Family & Friends

OK, me and my sister were always very close growing up and she was always such an emotional, sweet and caring person. When she turned 13 I remember my parents were worried that their sweet little girl would turn into a hormonal teenager but that never happened. There were no fights and she kept her child-like innocence even in adulthood. She always did have a fondness for children and animals and would break down and start crying whenever she saw somone suffering. But 3 days ago (she's 22 now) she called me on the phone saying that the previous day she had been raped. I tried to console her on the phone but then she asked if I could come over to her appartment because she didn't want to be alone and "hold her". Now I know that you should avoid physical contact with rape victims whenever possible and I didn't want to run into any awkward instances so I just told her I couldn't because I had to take care of something. That night at 2:00 in the morning she called me again this time sobbing more heavily and asked If I could come over there, cuddle and sleep with the bed with her. Now that woul already be highly innapropriate behavior for siblings not withstanding the present circumstances. So I again just told her I couldn't. The next day she called me and this time she was weeping so heavily her voice was incoherent so I just hung up. She tried calling me once yesterday and twice today but i didn't pick up because I just don't know what to do and I'm not sure I can deal with her in this kind of state. What do you think I should do. Do you think if I just leave her alone she'll sort herself out? And do you think that she asked me to hold and sleep with her because what happened to her some how advereley effected her psychology? I just don't know what to do because I hate to think of her in this condition :(