Yeah, she's batshit. Who on earth (A) thinks this is a good idea and (B) tells everyone you did it?

You dredged up a 30+ year old story you weren't involved with whatsoever... a situation where everyone that was involved had moved on. Sorry, not just moved on -- they forgave each other, married and had children and have been fine for 25 years. And this whacko did all this because she thought her son was unfairly being called out for being "immature"?!

What? Like, what level of sociopath are you that you pull a move like that?

Also... these people are close friends since college! Yikes.