Do they drug test family members before placing with them?

They probably will not test. Our kids just went back to a distant "relative" in which the entire family has a long drug history. This woman was never tested. She was even as bold as to smoke in the house on visits with the kids there and the baby has breathing problems and got sick. When I reported it the CW said it can't be true because she told us that she doesn't smoke anything anymore or drink and she was even willing to post a no smoking sign we gave her on her door. Smell the kids and you can tell what the person is smoking. CW says I can't tell what that is and even if I could you can't prove who it is from.