I wouldn't say your friend is messed up. Instead it sounds like she, like many women, is trying to navigate all the messages we get about our bodies being for the consumption and pleasure of others and the fact that those messages are pretty dang rage-making. Too, if she's a survivor, abuse can also introduce complexities into how she relates to her body.
You mention you don't know what to do. Can I ask why you feel like you need to do something? Did she ask for your help or advice around this?