Hi bscheopner please don't get it wrong with Rick's response i believed his intention is good. We only have few people from Mexico so it would be nice if you could post a pic of your mantis species in order for us to provide further help. It would be great for us too as we can understand more available species from Mexico. Now if your female mantis has been an adult (with visible wings) when you caught her it is likely that she had been mated. Usually a mantis can live for another 4-6 months after turning into adult. She will also lay 4-6 ootheca thriough out her adult life. Ootheca usually take 4-5 weeks to hatch and you need to prepare some fruit flies for hatchling. Please note that this is only general information as factors like species, climate, environment, etc can have significant influence to it too.