If she really done with me why is she's clinging on to me?

Sounds like she wants you around when she wants you around and wants you to go away when she doesn't want you around. Could be she is still trying to sort out her feelings for you. Breaking up is never easy, especially not when you're married. I'd say that she isn't "done with you" yet though because if she was she probably wouldn't act like that.

Is it also in any way possible she just wants to get laid? You know we females have our needs too but "society" tends to be a lot stricter in their opinion of how we fulfill those needs. We can't just go out to a bar and pick up some guy without people calling us all sorts of ugly names and whatnot. It's a hard thing to shake. Even when you think "I don't care what people think!" or you think you can do it without anybody you ACTUALLY know finding out about it, it is SO drilled into our heads that it sorta echoes in most of our heads. "Don't do that, it makes you a slut! You're a dirty little WHORE!"

I'm not saying that's what she is doing, just asking if that's a possibility. Does it seem like that's all she is interested in when she asks you to come around? If not, then she's probably just struggling with her feelings. Not sure if she wants to be apart or together. Probably something else bugging her than just "needing space". Might be an issue with you. Might be an issue with herself.