One thing to keep in mind is the guaranteed legendary drop from the final Act V boss during each story playthrough. This may not be an issue for you if you don't plan on taking a character to 70 and/or don't mind playing through the story mode again, but every legendary drop counts. You can always power through the game with her and then restart story mode, up the difficulty to where it feels good for you, and then do it again.
I see the story mode in D3 more as the training ground for Adventure mode and torment-level rifts.
Anyway, I think the Giant Bomb clan(s) are all full, or mostly full, but you can always join the GB Community until a new clan starts or some slots open up. Good luck dude.