No, she's retired, technically, and only teaches this one class that my school invited her back to teach because it's a "super special" class and apparently that was enticing enough for her.

But you know, even if she wasn't okay with frequent emails (and by frequent, I mean maybe once or twice a week, sometimes every other week), she would probably frame it as, "I'm getting overwhelmed by the volume of emails, so let's try to cut back," as opposed to, "You breached a boundary! You're too needy! You did something wrong! Feel guilty; feel very guilty!"

And if she said not to email, I wouldn't mind it, although I do think that showing her that I'm engaging with the material outside of class time is partly responsible for my (puzzlingly) high marks in her class. I don't think she sees students emailing her as a burden, but as evidence of her students being engaged with the course. Which is a luxury, I suppose, because she only has 18 students total. But I'm not like a "special student" who emails her the most and is the closest to her - a lot of the students in our class are because she's really great.