I would recommend that you treat her as a friend and/or roommate. Keep the expectations to a minimum and if she talks, you listen. You may even want to invite her to go out for a coffee once in a while. It doesn't hurt to "experiment" a bit and see what works and what doesn't work. Keep in mind, she is still processing and it will take some time for her to feel comfortable in her own skin. Also, whatever relationship you do create w/her...it must be a new one and old habits need to be tossed out. Dig deeper for patience and allow her to come to you when she's ready.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.