You were probably only asking midwives, right? I'm not one, but here is what I would do (or what I would want a MW to do for me):
I would wait. I would ask the woman if she is fearful or anxious, as these emotions can impede labor, and if she was I would talk with her. I would tell her that although there will be pain, it will go away right after the birth and will cause no damage to her body.
If she is not nervous, I would just look at this as yet another (normal) variation of labor. Maybe we could do something not baby-related - listen to some music, have a snack, go for a walk, look at some books.
I would also remind myself that no labor went on forever, and that all babies eventually come out. I would not see this situation as an emergency, and I would continue to monitor the baby with a stethoscope and reassure the mother. I would say a silent prayer of thanks that this baby will be born at home and not in the hospital where the mother could be on her way to being given drugs or cut open for no reason.