The writers don't want to get rid of Amba, yet they aren't going to keep Raghav out of the picture permanently. I'm really curious as to how they will make Amba a long term character (if that's what they are planning to do) without using Raghav as her leverage. I doubt that she (unlike Sia) would agree to stay as a naukrani to avenge Ammaji. From what we know about Amba, she'd rather eat bugs than allow her heartless mother to oppress her. 😛