What ever happend to Dushyants sister and there

WHat ever happen to there grandmother and also Dushyant and Romans younger sister? How come Kesars mother never puts her sister in law in her place?

I can't answer why Panbaa never puts Jumuna in her place, or what happend to Daiba (if that's who you meant).

However, Dushyant and Raman's sister had passed a way (burned herself to death) a long time ago. This was more prevalent near the start of the serial, for the longest time there was a grudge between two villages, more specifically Gulaal's family (her father was the head) and Vasant's(his father being the head of the other village) This was before Gulaal and Vasant had married. The sister had been married, and then was killed/died. Both families blamed one another and there were no marriages between the two villages. Gulaal and Vasant coming together brought peace and put the feud to rest.

Adding to this, Dushyant and Raman's youngest sister, Devika, was married into a family that will not allow her to visit her parents, so she never comes home.