Your saying the same female is breeding multiple times in just a few days? Once a female releases her eggs, she will not breed for a few weeks as she has no eggs left. I have had females eat eggs before bc of stress or because they were young and inexperienced. If you see a female holding eggs, you might want to remove her and put her in her own tank. If the females dont have a hiding spot they might continuously being chased and get stressed out and swallow the eggs. Also, if the male is not fertilizing the eggs, the females will spit them out or swallow them.