About Respect.. Generally kids behave with parent as parents interact or behave between themselves. The relationship between both her parents is not smooth and Ishita is close, attached to her mom more. How the mom interacts with her father, the child picks it up and behave accordingly. Even if her dad try to discipline Ishita now, mostly her mom will protect her and as the relationship between both parents is not good, it wont be of any use. Here first the relationship between parents should be good and respecting for the child to follow suit. Child is just reacting as she sees them.
Undoubtedly.........which is why I mentioned that he needs to discipline the child. But you are right the 2 parents have too much baggage that they need to throw out and their own relationship leaves much to be desired.