I suggest you consider going No Contact with your mother, at least for awhile.
And get some therapy to help process / "desensitize" your triggers with her.
If it's hurting your sobriety, be fearless and cut it out of your life.
I kept my mother in my life until she died when I was mid-forties.
My alcoholism kept escalating in part due to the stress of dealing with her
and her alcoholism and care needs.
In hindsight, I wish I had stepped away years before I did as I nearly destroyed
myself and my marriage.
Just because she's your mother doesn't mean you must keep in a toxic relationship.
Really.