Welcome to PC Worried Aunt. Its good the parent is in a treatment facility. Its best to ask the people handling the legal part of the child custody - most likely it will be supervised visits at 1st. I do hope the custodial parent will let this parent see the children because this would hinder the parents recovery and stress the children further. Even though this parent had a nervous breakdown and addiction problems, they can still be a parent as long as the court agrees. Its very sad when we hear about children being taken away indefinitely, just because of the stigma of mental illness. I hope everyone will show compassion during this difficult time.