Fast forward to adulthood. Guess what? Lots of people snore. Even girls.
Especially girls in Betty Neels world. Her heroines are often caught sleeping with their mouth slightly open and a soft, ladylike snore emanating from their person. Her heroes seldom sleep - so we don't have many examples of male snoring...but considering the build(vast) and nasal capacity of a Neels hero - I'm guessing her guys would actually be prodigious snorers.
Like I was last night. I woke myself up at least 2 or 3 times because I was snoring. I'm pretty sure it wasn't ladylike. Oh well.