Twilight has gone through the kitchen door of her family home in Canterlot hundreds of times. Next to that door is the family tree, which Twilight rarely took notice of. But when she looks at Applejack's family tree, she recognizes the phrase beneath the dead ponies' names and realizes an anomaly that she had forgotten for a very long time. There's a third name on her family tree, and it bears that phrase.
Written for BaeroRemedy's "I'll Never Forget You" contest, and inspired by a similar experience regarding my own family tree and one of my aunts. Rest in peace, Jean Marie.