Which is what used to be called decent, private, and a good girl.
It is possible that she just protects her image as being a good role model for young women.
It's a weird time we live in when one's lack of overt sexiness is considered asexual.
She may be asexual or even gay, but it sure is refreshing to see a relatively young person refuse to sell sex.
They used to be called "Spinsters" or "Old Maids" once they reached that age.