I still feel that if a specific question is asked pertaining the children. Remaining quiet and handing the phone over to the kids is basically stone walling, controlling, and spiteful.
I don't think her question was unreasonable. instead it became a power struggle. Personally, I feel like what goes on with kids should be open book. When they are young they can't communicate and things can get misinterpreted easily. Having adults all in, on their lives does not seem outrageous to me. In fact I think it helps to protect them. I wouldn't go out of my way to volunteer, but when asked I think it's okmto share info about them. If they get sick or hurt I also think it should be shared.
Now if wife had complained about your babysitter or about the fact that you are requiring babysitters, that is another story.
I agree that boundaries need to be established and I agree that it can be a fine line figuring them out. I struggle as well.
Me: 42 H: 43 Twins age 5 Physically Separated 7/2015