I think there are actually two issues here; the first that the OP's girlfriend was sexually abused when she was younger and this has evidently affected her relationships since, the second that the poster is upset about the lack of intimacy in his relationship - I don't think that the latter necessarily cancels out his understanding of the former. In fairness, few people have any real idea of what sexual abuse can do to a person, simply because it is something that most of us (thankfully) have not experienced, so when we are confronted with a situation, it is very difficult to know how to act.
The OP needs to realise that it must have taken a lot for is girlfriend to confide in him about her past, and that doing it by email might have just been the way she felt most comfortable doing this - being able to spend time arranging what she wanted to say, not having to deal with your reaction, answer questions etc. Have you tried to talk about her past since she told you? If she doesn't want to say anymore then you really should leave it, but understand the implications of it in her life now. Just because she doesn't want to talk about it, it doesn't mean it's not affecting her. If she does want to talk, perhaps you could try encouraging her to attend counselling. If not, just be there for her, and be understanding.
I feel I ought not even have to say that you shouldn't compare her to other girls, but I will, and also emphasise that the abuse she suffered means that she is probably not like the other girls you have been with anyway (not that we're all alike otherwise, before anyone asks...), so stop the comparisons. They will only make you feel resentful, or frustrated that you can't help her more.
Did you tell your friends the full details of your relationship, or just that your girlfriend seems sexually disinterested? Because I can't believe they'd say it was wierd if they actually understood the circumstances. There's nothing wrong with asking for a little advice from friends, but don't take what they say as fact, and make sure you don't say anything your girlfriend wouldn't be comfortable with them knowing.
The second issue is that you are upset about the lack of intimacy in your relationship, which is pretty understandable, but you have to be careful not to push her. The cuddling/sleeping naked things are good, so perhaps other things will follow- even though 10 months seems "long enough", maybe she still doesn't feel trusting enough yet. It's no so much that these things shouldn't be happening in a relationship, but that you are not happy with them not happening in yours. So you have to either be patient and understanding and let her take things at her own pace, or think about whether this is really the relationship you should be in. If you feel that sex is really that important to you, perhaps you'd do better in a relationship where you are more compatible; even though it's not her fault.
I suppose what I'm trying to say is you need to look at your relationship and decide what you want from it, both in terms of sex and other factors. If you care enough about your girlfriend to be understanding and work though this problem together, then fine, and good luck. But if you don't think you can be happy in this situation, maybe you should change things.
I hope things improve for you both soon!