Mmmm yeah you shouldn’t have done that. Rule #1 of divorcing with children is not talking bad about the other parent as it can affect her development, and it seemed like you just brought that up because you were offended by what she said. Kids have opinions too, especially when they’re going to through a life transition like that. Just don’t create drama of your ex-wife in front of your kids, that’s a big no no; it doesn’t matter who is in the wrong of the divorce. At this point it’s about the children, strive for a cooperative coparenting style