Greengran, there are some checks, for instance, drug taking but the youngsters I have have usually run away from "bad" parents and especially bad Step-fathers.
They turn up at local housing thinking that now they're 16, they can leave home. They get referred to Social Services who then refer to Depaul.
The more, if I can say "unruly" ones are housed in communal flats attached to local offices and overseen by the Support Workers.
Then you get the absolutely desperate, scared, mistreated ones who wouldn't say "boo to a goose". These are the ones that I take in. Believe me they are not dangerous at all, they are desperate little kids, terrified of having to go back "home".
They are so scared it takes me a while before they trust me and then start confiding their "stories" to me. Always the same, when I'm watching tv at night, they stand behind me and just start talking. Some of what they have endured is unbelievable. Rape, beatings, being locked in so the teachers can't see black eyes, burst lips. I tell them that I understand and that from now on they will be "their own people" and I will help them to achieve this.
I teach them how to shop, cook, clean, and quite a few have to be encouraged to wash as they don't think they can use the hot water.
Their bedrooms are warm and cozy and absolutly theirs while they are here. They are so proud to have their own space for the first time in their lives and then start to blossom and bloom.
My Dd lives across the road from me and tells me that she can't believe the difference in these down trodden girls who pass her house and in a few weeks, walk by with shiny hair, happy faces and heads held high.
Most stay between 6 months and 2 years until being housed.
To answer your question through, in 18 years I have never felt afraid of threatened by any of them.