Wow! I'm very interested. I've done OWoD Werewolf before as a player and as a storyteller, and had a great time. I've been reading my Werewolf stuff again since the anniversary book was announced, and jonesing to play.
The character I have in mind is a Silent Strider from the Muslim middle east, who escaped the plight of women there with her first transformation and journey into the dark roads of the umbra. She fled to America, the land of the free, but ended up a Canadian citizen with only a temporary visa into the US. I see her as an umbral guide, inspired by Harriet Tubman to help abused women to escape their situation, especially in her native part of the world. If your vision of the umbra supports taking mortals through the gauntlet, that would be something I'd like to explore. If not, it's no big deal!
For inspiration I'd probably use the Silent Striders tribe book, Rage Across Egypt, and Umbra Revised. If possible I'd like to take Tsetse Fly as my totem, to emphasize the protective, vengeful side of the Silent Striders.
I see that you're looking for a female character and I hope it's not a problem that any character I play is going to be a lesbian. It's not really satisfying for me to play a straight character. If this means losing honor/being nagged by elders for not meeting her obligation to have children, I can live with that. It could be interesting.
Does that sound okay?