Guess its fake T who will lose life OR gets injured severely landing in real coma, after tiger track. (serves well for fooling about cliff fall earlier) If so, high chances R gets blamed for her state.
Kadambari has NO liking for Damini.. she infact was desperate to make R reach upto T's death by leaving clues against D earlier, she has also seen how greedy & mean D can get, by humiliating, injuring and throwing her own children out.
Kadambari used D against T, then against R, then she used R against D, now she is using D in fake T form against R.
D believing like fool that M's evil stepmom will take care of her future with M is biggest red flag.. as she will get rid of D soon, without K getting suspicious of her sister's role.