It varies on the situation. Many people who are privy know that a case cannot be opened unless CYS steps foot in the house. They will show up and ask to talk, but that can be fruitless. If there's evidence you can supply, that can go towards warrants, which would help.

I think you need info about Lancaster foster care, and what will be done with the child(ren), since (imo) that's a huge danger sometimes.

It's been a long time since I've dealt with CYS in PA, and I never had anything in Lancaster County. We were in Delco and Venango when I was dealing with that kind of stuff, and each county is different. I would imagine though, Lancaster has more resources