Rosy Moonlight

Fan AU

When Sunny was very young, she was going to have a baby brother, but he died in childbirth alongside their mother. The deceased baby brother is Sunny's "Spike."

Argyle was a father who indulged his daughter with fantasies but didn't understand how it could become inappropriate or "too much."

Argyle died when Sunny was still a filly. Phyllis ended up raising her alongside her son, Sprout.

They are foils against the plot points where Twilight Sparkle thought that Princess Celestia didn't believe in the tale of the Mare in the Moon, and where Twilight was raised alongside a pony brother in a supportive family.