I know absolutely nothing of modeling. I've attempted some stuff before but I'm lucky if it ends up being N64 quality. :/ So sorry, I don't think I could help with that.
I might be able to land a hand with Animation but I'm already working on some other (non-brawl related) projects, so I can't say how reliable I'd be.
If you're looking for more man power, why not post this to a Brony forum and ask there? Yes, you'll get a lot of inexperienced people, but it's people none the less and if there's one thing I know about Bronies, it's that they'll learn pretty much anything to make quality pony stuff.

Is this still a thing? PLEASE SAY THIS IS STILL A THING D:
So far it looks great and I can't wait until it's finished.
Are you still planning to do the other ponies? I think a sort of "Super Smash Bronies" would be totally radical!
I imagine she has similar stats to Pit? Relying more on speed and agility than strength?
Finally, I would like to help in some way in the future, however my knowledge of brawl modding is rather limited :/ If you need anything photoshopped though, or if you're planning to mod sound effects such as what she says when selected or the announcer saying her name, or if you need someone to shoot ideas with, I'd be happy help.
Oh, one more thing, the video links don't seem to be showing up for me, now, I'm new to using this forum, so it could be an error on my side...