If you have time to drink, you have time to work a recovery program. It doesn't have to be AA. I quit with just SR and will have 90 days alcohol free later this week.
Your mom drinking and you drinking are two separate things. They are not related. You can quit while she continues to drink. You could even continue to drink if she decided to quit.
I quit drinking while living with somebody who was still drinking and my house was loaded with alcohol. I quit for me. NOBODY makes the decision whether or not I drink other than me.