In one of the Jills, though I can't remember which one, she says that if she has any children, she's sure they'll like sordid things like Alsatians or ballet. Or at least I think she does. The moment I read that as a child, it was as if a bell pinged and I saw my future, and sure enough, my daughter is a ballet girl.
She's read the Sheltie books, but she's a grown up girl of 11 now, and has left Sheltie well behind. Alas she hasn't replaced them with any of my lovely pony books; not one. I've made subtle, and not so subtle, efforts to interest her in Jill but it hasn't worked.