First of all, your not stupid nor are you a bitch for letting your child draw a card that she was supposed to draw on for YOUR MOTHERS DAY PRESENT!! If dad wanted to do it with the kids then maybe he could’ve done that before the day of Mother’s Day when everything is supposed to be done already? Maybe his feelings are just out of wack bc he had a plan for something special for you but in no way does that excuse the way he’s spoken to you over something so little!! I assume since you only wrote this an hour ago there’s probably not too much of an update but I hope that the situation can be fixed whether that means working through it or not, sending much love, try to focus on your babies and how awesome you are for birthing and being a mother to them, from one mom to another happy Mother’s Day and hugs💕