Talk:Episodes, films, and shorts/@comment-26236558-20160201141952/@comment-10390252-20160203114033

I'm guessing that Starlight has probably gone home to Our Town and her friends after learning all that she could from Twilight and the other Mane ponies.

Think about it this way: Cadance was probably already 6-8 weeks pregnant when she found out and they arranged to tell Twilight so Flurry would have been born about nine months later. A time skip of nine months increases the in-universe time since the season 1 premiere by about a third, so a lot could have happened in that length of time.

My headcanon until disproved: Twilight shoved Starlight through the Mirror of Worlds to make her Sunset Shimmer's problem. Starlight subsequently became a student at Crystal Prep (at least partly because she agreed with Sunset that somepony needs to keep an eye on Principal Cinch); she's now a Shadowbolt and the six of them are learning Friendship together from the HuMane Seven.