Too bad about the eggs!
They usually take about 60 days to hatch. You could theoretically incubate them in the tank, but when the babies hatch... I always provide a container with a moist substrate and the females almost invariably choose this spot to lay. When I see signs of digging, I know that it's time to start checking for eggs. Once the eggs are laid I put them in a little rubbermaid servin saver with some damp vermiculite. Then, I put them somewhere in my room where the temp stays fairly even usually in the low to mid 70s.
Hope you have better luck next time.
Alice