yea, I know how you feel, wanting to help her out with labor. When my dalmation molly was giving birth, she took a while, and I almost wanted to squeeze her in the middle to make the fry pop out!
I'm not sure if any of my fry were born stillborn, although its a distinct possibility. I was at work for the majority of the time she was giving birth. I have 8 living fry from the batch right now.
Yea, there's really nothing you can do except keep watching her, maybe put her in a breeding net, and hoping it all works out. Hope you get tons of healthy fry in the end!
I did get to see one of my fry's birth. Little guy was halfway out for maybe 30 minutes. Then it finally popped out all of a sudden.

It just kind of fell to the bottom of the tank on the gravel (not a far way, though, no worries). It lay there unmoving for a minute, making me very nervous!

Then it suddenly sprung up and started swimming around and hiding.

Wanted to tell you my little story to keep you from worrying if your fry pull the same stunt!