A: If you honestly believe that your ex is likely to abduct your child, you need to go to family court immediately. You can’t simply deny him the right to see his child, but you can’t risk the child’s safety, either. You need a court-approved visitation plan.
A: She can get in trouble for denying you your court-approved visitation and for endangering the children, if she drinks and drives with them. You need to go to family court - preferably with an attorney- and present that evidence to the court. They will modify the order as they see fit.
A: If the new protective order hearing was based on the same facts as the older hearing, and it had been heard before a judge (not dismissed or withdrawn), then a new hearing would be barred for res judicata. If there was a significant difference in facts (different charge, different date, etc.), then it's a whole new case to be heard on its own merits.