[Note, this story is set between Season 4 and 5, but is not related to the episode "The Lost Treasure of Griffonstone." This is an alternate take on the Gilda Redemption idea.]
After Twilight Sparkle's new castle was inducted, all of her friends and family were excited to throw a Castle-Warming Party as a celebration. However, after the party ended, Twilight's fellow Elements were surprised to see Gilda in town as well. Of course, that wasn't nearly as surprising as finding out she had a marefriend.
A marefriend who's supposed to be married to Princess Twilight Sparkle's Father.