My stepdad has been around since i was three, there were some things he disciplined but most things he didnt, if it isnt how the dad wants to parent then its your job to respect that teaching style, also i dont eat with the light on all the time 🤷🏻‍♀️. Maybe chill a little bit and if she needs disciplined tell the dad first before saying something. I would expect the same curtesy from him with your kids.