Sometimes if they arent done delivering kids they will take a little time cleaning up the new ones, then go to another corner & have the other(s).
I think Id wash up, take off all jewlry & take a feel; anybody left should be right there.
Start off with your fingers cupped together & make a side to side motion as you go further in. Stay on the top of her then down. Have someone hold her.
She will push. When you feel body parts try to get hold of a leg or both, feel to make sure head is fwd not turned back.
When you get a leg, when she pushes pull down. Dont pull unless she pushes.
If you find rear leg get hold of thigh & pull with contractions. She might have short ones so just pull when she does & keeping hold, wait for next one.
Going in with two fingers is the easiest way to determine if a kid is right there. You don't need lube for just that, and you can use gloves if you prefer. Make sure your hands are very clean if you don't.