Rinki?

Exactly. She had so much potential just like Romi. I remember she was always trying to silently bridge the gap between the Iyers and Bhallas, especially during Raman-Ishita wedding. She was excited about trying out new customs and doing things the Tamilian way, much to Toshi and Simmi's disdain. And I remember specifically that when Ishita stepped into the house after the wedding night, she didn't know where Raman's room was and Rinky was the one who showed Ishu her new room and was like, "If you need any help or anything at all, please don't hesitate to ask me."

Rinky could have been the perfect counterfoil nanand to Simmi.