My 2 cents:
*thinking like an indian tv cv*One twist could be that the plan was put in motion from the Speed-style episode. Ishita is still pregnant and the whole surrogacy thing was also part of the plan. Since Shagun is supposedly part of the plan, why can't she be in it from the beginning?Don't ask if it makes any sense. Just putting forth a possibility :)Edit: Have not watched yesterday's episode or read a WU, so I could be as wrong as Today's Chanakya was about Bihar results :)