I had seen people justifying Ishita's absence. Really? Didn't Raman utter harsh words before? Did she leave? Didn't she claim that she knew he didn't mean a thing when he's angry? If 5-10 outbursts are enough to end a relationship, then all divorce lawyers would have become billionaires by now and only a handful married couple would have remained married. Since Ishita is so hurt and took it against her self-respect, then there should be no reunion of IshRa.
In between all these, I feel really bad for Ishita's parents and children. They are receiving grave punishment in the form of abandonment with no fault whatsoever. Relationship between a mother and children is one of the focal points in YHM but it's so sad to see both Ishita and Shagun are mothers that no child deserves.