The most likely thing is that you have held a mirror up to her own drinking habits Jeni. Do not feel bad about her reaction. It has nothing to do with you. How can you being sober possibly be a bad thing to anyone who cares about you?!
I have found other peoples reactions really interesting. The only defensive or critical comments I have got have been from people who quite possibly have a drinking problem themselves.
Just carry on looking after yourself Jeni, don't try and second guess her behaviour, it's not worth it. You know that you are doing the right thing for you and your family and you can't be looking after everyone else's emotions too x
Lots of Love xxx