How bizzare is the life of those around us?my sister is married to a man, with 2 younger sisters- 23 and 28. when they are out in public- they cant stay clear of daddy's lap. Even if there is concert seating available. Their daughter(my niece) is getting older- and we need to convey that this is not normal behavior- without meddling in the family's personal afairs. It stops short of heavy petting, but the rubbing of each others shoulders etc- creeps me out- grandpa abused one of the girls sexually- her father remained in contact till his death. Are they fooling around behind closed doors? The mom is an oblivious flake. Dropped the ball protecting her daughters. How can i ensure my niece's safety without breaking any laws?