Becoz of Arohi's medical negligence patient died or not ,But it can't be calculated,because she was not the lead.Manyu was near to Abhinav during his death and went for jail for that,but he will not be a murderer.He might be intentionally take back his hand from the hand of Abhinav ,but he can't be blamed.But Akshara can be blamed for the death just because she was dared to moved on.
Arohi was an amazing mother who raised her daughter alone with the support of two families and AK is a weak character because she seek support of a stranger because she was totally alone.she isn't still amazing even after raising her daughter 22 years alone without family support.
But Anyway Aarohi was a better character than AK .She didn't killed anyone, planned plotted against anyone ,dint blackmail anyone,dint got insecure by anyone and dint lie to her husband that she is pregnant and dint went to marry his brother in law from one side and her sister's ex hubby from other side