I'm afraid Tania would be a big underdog in this fight. I'd like her to win, but it would be very tough. She definitely has to avoid fighting toe to toe. So, a lot of fast movement on the mat, not allowing the bigger girl to grab her. And when, and if, the opportunity arises, strike quickly. A few kicks might shake up Jwala, or even bring her down. Then a quick triangle choke. Even though she is smaller, Tania should not have too many problems submitting the bigger girl, once the choke hold is properly locked in.
Mind you, this is just how I'd love to see it. Jwala would still be a huge favorite in this one.
And one friendly advice. You should probably check POLL rules, especially rule #6 - no bumping of polls.