Grrrrr husband baby momma just gets under my skin 😪

So out with my husband today and bump into his baby momma, she starts running her mouth 😵 in front out a street full of people so embarrassing 😨 anyway she then proceeded to say that his son shouldn't be part of our baby's life (his biological sister) how can you been so nasty as to stop to children from knowing each other and been able to spend quality family time together 🤔 I was so hurt and confused I just started crying I just don't understand it, sorry just needed to get it off my chest and rant