They are giving out their phone number to people they met on roblox.
The child is institutionalised, their parent cannot control their behavior meaningfully and the adults at the institution are pretty negligent and she doesn’t trust them.
I have messaged like my whole family and some friends for advice but nobody is getting back to me.
How old is this child? That plays a role in how blunt you should be
9 Almost 10
So they can understand that there are adults posing as children online to trick them and hurt them. Doesn’t have to be too explicit, but it needs to convey the risk