Children need more supervision I hear this over and over how children are sent off to play in a bedroom , supervison is the key to stuff' not happening , Did the mother say there was a police case about her 2 boys being abused it doesnt sound real to me ..There could be some family problem going on , it seems to me that you should not let your child play with them as if they have been abused its going to continue to happen , stay away make sure you supervise your children when they have friends over ...if you are concerned for the children in that houshold maybe speak to someone about it ....