She giggles. "Yes."

"How long are you planning to stay today?" asks Kaylo.

"At least a few hours, unless your sunset is soon."

"Sunset's in -" He casts a spell, he peers at the time. "Two angles, why?"

"I guess it might be different here - in Ponyville most things start to close a little after sunset when it starts getting properly dark, and I'd be allowed to stay at the library but people who didn't know the librarian well would be asked to go home."

"Library's open all night to students and authorized guests. Aar Kithen watched me summon you, I'd say you're authorized."

"Well, that's convenient."

"Yup. Something like twenty-five percent of why I haven't graduated yet."

"And what are the other three quarters?"

"Nowhere else obvious to go until I'm old enough to claim my pseudonym, and pissing off my aunt."

"Do you have an unpleasant aunt?"

"Yeah, we haven't ever really gotten along."

"Unpleasant aunts are no fun," says Blueberry. "Clover had one of those. Then she went away."

"Good for Clover. I'm stuck with my aunt until I run out of ways to piss her off, pretty much - my parents wrote up this eccentric will and I only inherit any of their money if she bails on paying for my education with it, so I'm dragging it out as long as I can or at least until I have some kind of income set up that doesn't involve her."

"That makes sense. Well, what you're doing makes sense. The eccentric will sounds... eccentric."

"They were eccentric people," Kaylo sighs.

"Sometimes people are that. Anyway, let me see if I have a better idea of interworld travel now." She commences scribbling again.

Kaylo watches.

Slightly impenetrable notes and occasional clarifying diagrams on the subject of what worlds are and how they relate to each other, with reference to the difference between how Lialen relates to Elcenia and how Elcenia and Equestria relate to each other.