Mom tried to abort me

What would you do if your mom treated your daughter poorly and treated yourself poorly. She would tell you in front of your face to your sister that she was her favorite. And that no one would come before your sister (Her other daughter). She makes weird comments about my daughter, like how she is going to be shark bait amongst other things. In front of me and my daughter she said “Abby is still cuter” abby is my sister, her other daughter. Well three days ago, I had found out that she was trying to abort me.

Edit: would you confront her about it than cut her off?