Most Helpful Girl
I think you are freaking out, but you have good intentions. You just don't want your girlfriend to fall back into being the hard partier/drinker as it scares you which is reasonable - you're only looking out for her. Another thing is that her attitude has changed, she is not doing what you're used to when she's with you she's almost falling back into who she used to be or so it seems.
So I think it is fine to worry or be a little paranoid I know I would if my boyfriend started to change his tune and have a completely different attitude towards me. You only care about her and are trying to figure out why there is a sudden change.
What I think you need to do is have a talk with her, ask her what's up. You need to be calm when discussing with her, not angry as really that doesn't solve anything.
Maybe she thinks you see too much of her and just wants space/Maybe there is some underlying serious problem she hasn't told you about. You know it could be anything, you won't know until you talk to her. But seeing as you can't really talk to her right now, she keeps pushing you away, I think to just give her space and either come back to her in a few days or wait until she comes back to you.1THIS IS NOT RELEVANT ANYMORE