I think they are likely to proceed in these lines:
1 Ruhi loses her baby in Miscarriage
Rohit dies in the accident
2 Abhira undergoes premature labour
3Abhira gives birth to a baby boy but slips into comma
4 A five year leap. Arman is in depression and doesn't pay attention to his child.
5 Ruhi Raises Abhira's child and becomes Mahan
6 Abhira gets out of coma and gets insecure for her child who doesn't recognise her and considers Ruhi to be her mom.
7 Ruhi plays the victim bechari and entitlement card that since she raised the child Abhira is no more his mother and can't claim her.
8 The Goyenkas and Podsars sides with Ruhi and want Ruhi to have the rights on the child.
9 Abhira files a legal case against Poddars and Arman for child's custody
10 They might even show preparations or marriage of Ruhi and Armaan for the child since they would lose hope that Abhira would ever get out of coma.
11 If they don't kill Rohit they can also show Abhira to be the first to reach hospital and gives consent to remove Ruhi's uterus post miscarriage due to certain complications just like Pakhi of Ghum.
What are your predictions?
10