I'm going to abruptly drop a decent woman from my life
Why do you want to do that?
She stopped talking to me after a minor disagreement and I want to cut all connections with her.
It is rude to ghost someone. You have no clue what happened to her it is not fair to do to someone what they did to you.
I know well what happened to her. She is just a fake bitch anyway. I'm glad that she's gone anyway.
Well you clearly don't like her. You should still be honest and tell her you are going to break contact.