@emc always said that one of the best, if not the best, She-Hulk teams is Shulk/Doom/Strider. So, I guess Strider helps her a lot. Can’t say much because I don’t play She-Hulk.
Check out his stuff on Youtube, that might enlight you a bit: https://www.youtube.com/user/Game650/videos
I think it’s an alright team. Drones help her a lot for getting in, and Dark Hole is a decent combo extension and underrated neutral assist (the durability on it is really good, it nullifies Plasma Beam assist IIRC).
If She-Hulk dies, DHC from Sentinel to Dorm and begin spells and Purifications on the screen.
I think Felicia might work well with Sent/Dorm too, but she lacks the damage She-Hulk has, so you would probably go for a reset heavy game with Felicia or risking Sentinel TACs.