Well, at least they are still alive! :clover:
Depending on how desperate you are, and how hands on you want to be, there are a couple of things you can try if she will tolerate it.
This may sound strange, but I know it works for people at least. Stimulate her nipples by squeezing and rubbing them. She probably wont like it. (Ask me how I know.) It should throw her into transition, and bring on contractions.
Since you know there is nothing stuck, I assume you had a feel around in her vaginal canal. That can also stimulate contractions, so you may try gently probing her with your well lubricated pinky.
Good luck, Lindsey!