TW: Infidelity
Designed for me by Strawberry-Spritz
Welcome to the DislikedVerse, aka the Disliked Ships AU. This is in no way meant to be a platform for hate, it's just an excuse for me to make some cute or interesting fankids for MLP ships I don't particularly care about.
This is Rose du Matin, the illegitimate daughter of Prince Blueblood and Fleur de Lis and the (unknowingly) half-sister of Mercury Bubbles. She's a babysitter in Canterlot and often looks after various young foals, with one of her most frequent charges being Princess Moon Crater. She's a very kind and patient mare and can pretty much take anything that little kids can dish out, making her very reliable.
As for how she came to be, Blueblood had an affair shortly before Rarity got pregnant with Mercury. Wanting to avoid a scandal, he agreed to send Fleur money to help support her and the foal as long as she didn't tell anypony else who the father was. Blueblood has been secretly sending Fleur child support checks behind Rarity's back all these years, and when asked about her daughter's parentage, Fleur just says that she was conceived via sperm donor.