I would tell her that she needs get her child under control during pick-up and drop-off or you will terminate. That is a total lack of respect for you to allow her child to slap you!!! I have seen parents let their kids hit them (I totally don't get it and disgree with this parenting or lack of parenting), but to allow a child to hit her caregiver and sit there and say nothing ?!! Honestly, that would be the last straw...termination seems to be the only option here. I know that kids often act up once their parents arrive and do things that wouldn't do during the day, but this is going WAY too far! I honestly don't think I could keep on with a parent/child combo like this.