off the jump, her position on India's BJP party is instant DQ. She also has a few other questionable positions. W/R/T anti-war position, she's very "Warren" like in that she starts out some way but once you peel back those layers...
Bernie needs to have someone that completely shares his anti-war ideals. Or as close to it as possible. Tulsi has too many red flags to sign off on her.
I don't know who else in the party is close enough.