Should I tell my wife's side of the family that we are getting a divorce?

Me and my wife are getting a divorce and it's an agreed on split. I want kids and she has changed her mind on the subject.

She has not told her side of the family and does not intend to. Knowing her she's gonna ask to stay at her sister's for a bit as they are close and its not unusual for her to and then at some point when it gets an awkward amount of time she will tell her sister and the rest of the family. She's selfish like that and said she does not want to be embarrassed that she got a divorce.

Her side while they can be judgmental are nice people to me and have been nothing but respectful and supportive

TL;DR: Wife does not want to tell her family of the divorce and will spring it on them once they have already helped her. Do I tell them ahead of time?