on tuesday and thursdays i watch my 12 yr old niece and 8 yr old nephew after school for my sister in law. as a child care provider for 17 yrs i love it but recently my niece has used language i would never allow and would have serious consequences. and i know her mother and father would not allow it. i also have an 11 8 5 and 3 yr old twins at home and the younger ones will pick up on everything!!! How should i handle this situation while she is in my care to ensure my children will also understand we do not use such language..