Invertebrates are generally not easy to raise. Emerald Crabs hatch as larva that was less than 1 mm.

Ya I think I'll put her in a small tank with a bubble till she releases and feed the larvae phytoplankton

It's worth a shot, but don't be disappointed if it doesn't work. There aren't many crustaceans that breed successfully in captivity. It might be worth checking out how people who raise peppermint shrimp from larvae and see if there's any tips you can glean.