I actually had a bigger issue with Noodle getting kicked by Mrs Scrubble (or whatever her name was) than a fat suit

This actually isn't just about shaving a baby's head. This is about defying you whilst knowing already that you didn't want it to happen. This is about Trust and I would tell the both of them that they broke your trust. They knew that they were going against your opinion in regards to your daughter that's why they did it whilst you were out.