Ishita and Raman are HORRIBLE parents and I'm sorry to say, I feel NO sympathy for Ishita with regards to Ruhi. She deserves all the hate she is getting from Ruhi.
Regarding the question around why Ruhi is cruel only to Ishita, it's simple - it's because Ruhi loved and trusted Ishita the most in this entire world! Ishima was Ruhi's universe.. her one anchor and hero, one she trusted would never let her down. And let down she did big time! Do you all remember the cruel way in which Ishita rejected Ruhi in the courtroom? She could have talked to her daughter, asked her to be brave for a few more days so she and Raman could permanently bring her home. She could have assured that she loved her and would come back for her. But she did NONE of that. She refused to even look at Ruhi and told the judge to let Shagun have Ruhi.
Can anyone understand how that would have broken a 6 yr old girl who had already had a rough childhood in which she got very little love from her parents?
Raman and Ishita have committed a grave crime by giving Ruhi to Shagun. They know what a selfish lowlife Shagun is and yet, they let their 6 yr old daughter's custody go to that vamp. Look at what Ruhi is going thru now in the name of modeling - it's called CHILD ABUSE! And who are responsible for it? Raman and Ishita because they left their little Ruhi at the mercy of that evil, selfish, heartless woman!
What Ruhi is feeling is completely natural and Ishita deserves this AND more!!! And before anyone asks about Raman - yes, I hate both characters equally for what they have done to the little angel. I hope no real child in this world gets parents like Ishita, Raman or Shagun!