I have noticed too , that my male does most of the work. Its like mama barely gets a chance to sit on the eggs. My goldian just started singing again, I might just put that nest back in there!
Society finches are cheap, it might be worth getting a pair to raise the eggs.
After the first finch hatched and disappeared, I did candle the other two eggs. They were empty, got tossed, I took the nest out to give the birds a break. I actually think the female gouldian was a bit depressed. I think next time I will let the Goldians lay and sit on the eggs, they were...
I don't know what kind of finches you have. If you are breeding Lady Gouldians, they are not great parents. Mine worked very hard on 3 eggs, and when one baby hatched, they tossed it out of the nest. I put it back, the next morning it had completely disappeared! I looked everywhere, no blood...