Oh Florence, I am so happy for you.
Enjoy your time with the new guy, you certainly deserve it, friend.
As far as mom, ( and I know you already know this) not a damn thing you can do about what she say to others, but you certainly have the power to manage what you and her discuss in a one on one situation.
Don't let her run you off in the ditch, when she starts her crap, change the subject, or if she persists, remove yourself, she may not ever get the hint, but you certainly will feel better about not allowing her meaningless words to control your life.
Hugs to you,.