“I’ve recently broken up w/ my girlfriend. I’ve been seeing a girl that was in a 4-year r asdfadsf ”

I've recently broken up w/ my girlfriend. I've been seeing a girl that was in a 4-year relationship who's been broken up w/ the guy for a year. One second she's affectionate, but most of the time I feel like she's holding back. She says she has trouble treating people because they've hurt her and has problems being intimate. I'm understanding, but I don't really know where I stand. When I asked her if she wanted to be alone she said no. How should I handle it?