Is this child abuse??

I'm not the one doing, one of my neighbors are. So she'll leave her 3 yearolds at home for atleast 10-15 minutes ALONE! Here's why. so she has a nother kid that she has to pick up from school, so she goes and gets her and leaves her 3 year olds home to nap. I don't know why she doesn't take her kids with her though. But i was wondering if i should report her.