I feel extremely guilty. Any way to make it up to her?

My neighbor upstairs is obviously in an abusive relationships. She always has the cops in and out of the building and I've even called after hearing her blood curdling screams.

Well we ran into each other for the first time and she stopped me and said "wanna keep your baby in check?" I looked at her like

And said "what?" And she went on to tell me that my baby keeps her up all night and that she's called managment to make a noise complaint. I told her babies cry and tried to walk away and she called me a dummy under her breath. I turned around and said "I'd beat your ass but your boyfriend does that on a daily" and her face dropped and her eyes got teary and she did this weird smile thing and walked into the building. I felt kinda bad after I said it. Should i apologize or something. I went a bit far.