The new season · 4:52pm Mar 25th, 2017
I just saw a clip from season 7 on facebook. It featured Celestia and Twilight sitting at a table together. Twilight is talking about how Celestia sent her to ponyville and realising it's time for her to send Starlight away too.
I really don't know what to think about this.
Celestia only sent Twilight to Ponyville to help prepare for the summer sun celebration. It was Twilight who decided to stay with her friends.