Saba, Saba. Hmmm...The first thought that comes to mind is Juuchan17's fanfic series. Ah, well. I must focus. Ideas. Hm, hm, hm, hm, hm. *loading, loading, loading* Well, one common idea used is to have Saba find a mate and have puppies. That's one idea, though you've probably thought of that. I'm no help at all, am I?

Maybe a story on how Saba got her name?
I'd like to know, because I have no idea where Universal Studios got
Saba from. One last idea: Saba somehow ends up living or visiting another town, and everyone knows she is Balto's daughter. What are the local dogs' reactions? Or it could be vice versa: Saba goes to a town far out of the way where no one knows she's Balto daughter, or maybe they haven't even heard of Balto.

There, some ideas. I hope I was helpful!