True, they DO have a lot in common....and Twilight is the time period between night and day, so....I dunno, really.
But who knows, maybe she could be related to them by niece or something. I mean, Prince Blueblood was somehow related to Celestia, and he was only a unicorn, not an alicorn. Twilight EARNED her wings, she din't have them from the start. But maybe there's a SMALL chance, but I kinda doubt it.
But....who knows?