Maybe, if you take good care of them. I think people keep crickets as pets. They're supposed to be good luck in some countries.

[Can't be too hard to take care of, right? Especially if instead of trying to keep them indoors, she just tries to befriend the ones outside. In fact, on second thought, he really doesn't want insects crawling into his clothes while he's trying to sleep, so she'd better not bring them in.]

They'll be happiest if you let them live outside though, but you can always bring them food. Oh, or play your ocarina for them.