Be very careful of using any medictions on any animal that is having birthing problems.
You need to try and find out why she is having difficulty passing those last few eggs. If it is simply lack of energy than yes maybe something to stimilate contractions would work, However if there is an anatimical reason she has stopped laying and you give her medication to induce contractions, you risk putting her in severe pain or even doing physical damage to her.
If she doesn't seem to be in immediate distress, then I would let her be for a little longer while you see if you can find a vet that is able to see her.
There are plenty of herp lovers on this forum, maybe someone can recommend a vet that would be close enough to you.
Good luck and hope all goes well.
sdaly
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"Dream as if you'll live forever. Live as if you'll die today."