Father may have full custody, but mother has the right to contact Department of Family Children Services and Child Protective Services if she believes her son is in danger. It would also be helpful to find out if this was a court order or just a parental decision. If in fact, it is a parental decision, the mother can legally take it to a juvenile court/superior court to obtain some leverage in this case. This is a proposed course of actions for her to take:
1. Obtain a lawyer who specializes in custody issues and is PROACTIVE in protecting children.
2. File a motion in superior court for Termination of Parental Rights against the father, or a motion to obtain custody due to the present evidence that the child is in active danger.
3. Gather all evidence against TB to present to the judge at the court date.
4. File a child abuse report with Child Protective Services. Get them involved, explain the situation. Many CPS people are willing to help out. It may mean placing the kid in a Temporary Foster Care placement until a suitable person can be found to care for him/her.
5. Push the judge to appoint a CASA - Court Appointed Special Advocate, or a Guardian Ad Litem for the child. They are trained to investigate and make the best recommendation for the child in a court of law.