That’s Karma for You
You’ve dodged a major bullet, little girl. If your mother has enough pull with her son to get him to break up with you over something so insignificant, you don’t want her as a mother-in-law. I feel sorry for the blonde woman your ex married and had children with in the future.
You’re probably thinking: “How can you even compare a grandparent to someone who’s only known for their cruelty?” Grandmothers are unusual and precious. I’m hoping grandma can overcome her prejudicial ideas. Also, I hope your ex receives a reality check about his mother’s bad parenting. Nothing about this was acceptable, and he knowingly provided fuel to the fire.