"I've been thinking about that, too. I want Dinky to have options and opportunities, but... Canterlot is far, and we can't move here easily. But there's no Unicorn-centric schooling any closer... but by the time she goes to one of them, she'd be old enough to board there. But boarding in a place with expectations about something out of her control..." Derpy sighs. She has a point; while she's got faith Dinky could rise to meet whatever prestigious demands a Unicorn school might demand, there's nothing they can do about difference in life experience. Being surrounded by Canterlot nobles and the Canterlot lifestyle, away from her Mom and home... it's a daunting thought path for poor Derpy.