Well being that I am the W of a recovering alcoholic I feel qualified to comment on some things...
First it is great that you are sober now and working on staying that way...but let me tell you that just because you didn't physically abuse her...she was abused by you...there is no way someone can be an alcoholic and not have it effect his family and others around him....the closest ones to you suffer the most...
My idea on all of this is that she sees you taking responsibility...probably when you first entered rehab she didn't believe you would really quit...now with a little passage of time she sees you really working at it...this makes her curious...she wants to know the "new" you...let her in...don't push...just follow her lead and put your best "real" foot forward...
Things sound very very promising to me in your situation...because you gave up hope...you most likely backed off of her and without pressure she was able to see you more clearly...seeing you sober is probably a HUGE PLUS for you right now...
Give her time...keep doning right by you...make sure you support her and your son in the way she feels comfortable...and just see what happens from there...
