1.You can file a case for child custody seeking full custody of your child and for visitation rights in the meantime as an interim relief.
If she files false criminal cases against you, then you may first obtain anticipatory bail and then challenge the same properly in the trial proceedings.
2. If you know her address, then you can pack them up and send it through parcel service to her address.
3. You can seek visitation rights in the child custody case as an interim relief.
4. You can send her a legal notice instructing her to join you in the new address by stimulating a time to rejoin you, if she do not respond then you can file a RCR case against her.
5. You may have to get an order from court in this regard.
6. She may file maintenance case for her and for the child.