Fish meant for market was found dumped in a bin outside the school. The mother believed the rotting smell would disguise her hidden bundle beneath. Her post-birth addled brain forgetting only papers were supposed to be in that container and what she tried to dispose would be eventually found.
Margarita wasn't a bad person. She did what she thought best at the time. Took her baby to the church and left her on the steps timing so the priest would find it. The bloody towels, rags, her own clothing stuffed below the fish. She kept the umbilical cord and placenta....