I know what is going to happen...
I think Nivi in her traumatised mind will fall in love with Sumit because she will be jealous of sukum's love , and the way Sumit cares about Kumkum. And I'm sure when KumKum will get to know this she will force Sumit to spend time with Nivi till she is in health again.
So there will be 2 love-triangles
abhishek-aashka-vikram
and
kumkum-sumit-nivi