Well, Ishita is shown to be a dependent individual, so I would say no. Yash, Palak and Payal needed a strong support in life to help deal with the great loss they had to face with. Aarti being a strong, patient woman was able to give them that support, I don't think Ishita could ever give them the same support or even empathize with them.
Also she wouldn't have been happy because Yash, the kids and the family probably wouldn't have really accepted her, in the real sense, like Aarti at the beginning. Sorry for the long answer! This is just my opinion 😊