ok you do that. its no wander she is eating them- the babies hav no where to hide in a breding net from her! i'd say take her out of the net (but not the babies) and let her give birth in the tank. at least then the babies will hav somewhere to dash and hide. then, as soon, as you can, pick the babies out of the tank and put thme in the breeding net all together. Check the tank well- every nook and cranny
good luck!