Snow is the Daughter of her pack leader,
Owl, she's young but already feels the pressure from her father to possibly someday lead her pack. This makes her nervous, as she'd much rather keep to herself and raise her children in private. She is very close with her mother,
Fawn because the two of them bond over their shared anxieties. They are very similar.
She more closely resembles her father than her sister
Buttercup, and has a silver marking on her nose that he has commented on as "rare", Snow believes this is the reason why her father wants her to lead and has learned to resent her marking.
When one of her pups,
Gray was murdered by a nearby pack Snow was thrown into a spiral of paranoia alongside her mother. Together the two of them closed off the leader's den so the only wolf that's around to come and go is Owl himself.