How did the festival in Starlight's village get its name? Perhaps a certain pony wandered into town one day, a pony who knows firsthoof about making a huge mistake, and what's needed for everypony to get over it...
(Story idea suggested by OmniFox.) The Apple Family hosts a very special dinner during a family reunion where each member brings a special guest. The guests include: Grand Pear, Sugar Belle, Rara, and Diamond Tiara.
On Hearth's Warming Eve, Sweetie Belle comes across a lonely Sugar Belle and invites her caroling, where the two Belles confide in one another about life and cutie marks.
When all of her friends' families have arrived in town for the holidays, Sugar Belle finds herself lonely without much in the way of kin. Thus, Party Favor, Double Diamond, and Night Glider invite her to join in each of their family functions.
Having accepted Twilight's offer of apprenticeship in the magic of friendship, Starlight Glimmer returns to the community she founded long ago, in her first attempt to make amends.