You are so full of BS. You're the one who was complaining about people reading tea leaves this morning. Suddenly, you're into protecting the karmic cycle? Why don't you just admit that you're embarrassed of the activity?
Women with kids like to keep their names so that they keep the connection with their kids. But, I have one friend who is an unusual case of someone who changed hers back even though she had kids. Wait and see - She might want to change it back on her own. If you push it, it'll probably be another point of conflict that you don't need right now.