Christina,
First, I am sorry it was hard for you...

Way to Go on staying sober!
I salute the courage you showed in protecting your sobriety.

It must have been emotionally draining not to drink in response to the triggers of being around a drinking family.
My interactions with my family when I was in early sobriety certainly were for me...
In time, I understood my sobriety threatened their own drinking patterns. It made them uncomfortable so there was some anger behind their joking...they were not ready to accept the change in the status quo.
If I had said I had a "medical condition" like diabetes then they would have more readily accepted my not drinking--somehow it made it all right for me to not drink.

Honestly? I didn't share about AA for awhile. I did not believe it was any of their business, and it would have led them to try and convince me that I was not an alcoholic. Again, it would have threatened them...but I also did not want to start doubting myself about my addiction being real.
I needed more time to feel secure enough to share that with them. Their reaction was exactly what I expected, However, I refused to respond to their protests.

With respect,
Cap