Assuming they're old enough to have a phone, obviously.

I have to send my daughter reminders to do things all the time because she's extremely forgetful. She's not annoyed by that, she's asked me to do it. And whenever I send her one, I get a read receipt and no reply. And I've told her a bunch of times that it's rude to not reply to texts like that, but she keeps doing it.

It's driving me crazy. She's a good kid, but why doesn't she return texts?!