Arrow's mother

In Rudolph the Red-Nosed Reindeer: The Movie, Arrow's father is Cupid, but who is his mother?. Could she be the doe Arrow is standing next to during The Christmas Eve Launch?, if this is her then why wasn't she with Cupid and Comet after Arrow was made winner by default of The Sleigh Race?, had she died, couldn't make it or arrived after Zoey left after she broke up with Arrow or was she just a random doe standing next to Arrow by chance?.