I’ve been NC with my mother for many many years. My eldest ds is 19. He knows this and he knows the reasons why.
unbeknown to me he had been seeing my mother , fine, he’s an adult so his choice. I only found out as she has written to me (!) because he had borrowed £500 off her towards his car insurance and has not paid her back as agreed. She is now saying o have to pay.
AIBU to ignore this or tell her it’s between them to sort out (as I’ve told ds)