She's angry, apparently, but I'm guessing she doesn't give you any input on how you "should" go about things?
Is it her assumption that any forms of intimacy is going to lead to sex? Can you give, subtly, and make her want you, make her come to you, if that makes sense...
Are you sure she orgasms or is there a chance that she is faking it?
She obviously has some appearance issues and until she feels good about herself and starts taking better care of herself, there really is little hope that she is going to feel good about being intimate with you.

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