it is shown that simmi and toshi ji having argument.toshi ji not letting go ananya with simmi.mr.bhalla also in bad mood..
div's IV-she is saying she cant let this happen with simmi.she cant let simmi feel that ishita leaving peacefull life with raman and i cant even stay with husband.
so ishita will definately do something for simmi.
so ultimately it will be ishita's decision to bring param back i guess.
it will be clear in todays episode.