Hi Spantoh,
I put my ex-gf through hell with my drinking. I went to rehab and came out a new man, but I couldn't just pick things up with her again. I think you should give your GF some time to work on herself. I wouldn't be surprised if her counsellors in rehab advised her to keep some distance from you as I was told the same in rehab. The reasoning is that relationship troubles could jeopardize sobriety.