Child of the mix pairing of a wolf and raichu, Sally was the only one of her siblings that you could look at and truly claim was her parents' child. Granted, it was because Sally's body developed well beyond the normal onset of puberty, unlike the rest of her littermates.
But aside from her prodigious bust, Sally was like any regular kid. Curious about the world, and sometimes a trouble maker (even if she tried not to be!), she liked to watch movies, play games, and read. In fact, reading was her favorite hobby, and she'd quickly devour any books given to her within a few hours time. While not the most intelligent, she did have a real knack for remembering stuff she read long as it interested her.
On the eve of their 9th birthday, she and her siblings were made aware that after their birthday the next day, they'd be split up and adopted by friends and other family members...which is how Sally wound up staying with Luni. He'd always been her favorite uncle, bringing her books and treats and such.
of course, living in Luni's house, means that she's gonna get to explore a lot more of the world...especially after getting out of bed one night for a glass of water, and catching him in a rather intimate act on his computer!