I'm gonna disagree with everyone here. I say go. Because she needs you. You have been in her shoes and know what she is dealing with- go as support.. to motivate her that she can pull through this. If she starts talking about her feeling for you or anything that makes you uncomfortable- simply tell her now is not the time and place- and when she gets out of rehab you will discuss it. She may just be feeling all these emotions and acting like this because she is out of her comfort zone and making a big life change. Don't walk away from her when now is the time she needs you the most. Thats just my opinion though.. only you know whats the right thing to do in your heart.