
Quoting
Mercy&Grace
BooRennie, I know it is not the OP's child. But if her child spends any time around the other child, here child will pick up on the lying the other child does. When a child is taught to lie like the OP says this child has been, it is not localized to one area of the child's life. The child that is lying is aware of what is going on and how upset everyone is. Children talk about these things. Even when parents think they don't. When they get older and want to try and control what their parent(s) do and don't do, they will remember what is going on now. It may not be successful in the end, but the drama it causes can be satisfying to a mad teenager.