It it is a flame Mudra (meditative hand posture) which happens to be featured in crane-style Kungfu. This posture probably originated in India like much of the roots of Kungfu--a Buddhist-influenced martial art. (Buddhism migrated to China from India.)
Buddhism in turn doubtless inherited the Mudra from its Hindu roots.
Tulsi is a Hindu.
And no, I am not a Buddhist. They just invented amazing martial arts, particularly after mixing with Taoist influences in China.
I think Tulsi’s hand gestures are irrelevant. It’s what’s in her mind and what comes out of her mouth that’s the problem.