Definitely. I’m very concerned if you’re letting your daughter email people she hasn’t met. After all, you wouldn’t let her get in the car with someone you’ve never met before.
It’s true that kids this age need some privacy; for example, while getting dressed or while reading a book. But just as you wouldn’t let her spend time with people that you don’t know, you shouldn’t let her do this on the Internet, either. There are dangerous things she can see online and very dangerous people such as child predators.

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