Yes, if she has an older child she currently pays child support for.
No, but he should get a modification. see links below
The father has to have the court's consent to cease paying child support.
If the father becomes unemployed, he should immediately contact the court to seek relief from the child support obligations. He may NOT just stop paying.
If you are paying the mother because of a court order then you must continue to do so if the girls have not reached their majority.
No, but you have to tell the venue that issued the support order.
No but your mother can. The child support goes to her and not you.
no, but he needs to get it modified see links below
You can sign your rights away but you will still have to pay child support if you are the father or mother of the child. There is no way to avoid paying child support.
no
Only Welfare
If court will not accept a filing, request a change of venue. see link below
With approval of the court.