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A few things, mostly being patient, which you obviously are. You are doing the right things. Let her set the limits until she feels safe. You are kind to see her through this. Her behavior tells me her abuse was really BAD. I would expect it to take a year or two before you see significant progress. I can tell you know this is not her fault. She is obviously trying. Be sensitive, but don't try to be her therapist. As you said, time and counseling, probably more than you may expect. Ask her what would help.