Wats Yamini n Rose's back story?

Yamini seems to be older than others. Why she is an ice queen but soft at heart? Has sumthn bad happened to her?

Rose is too trendy n fashionable. Anyone will find her dumb due to her behaviour but she is definitely not dumb. Sumtyms she is so funny talking interesting things but sumtyms she talks serious things. She asked Sameer abt his opinion on domestic violence. She is not at all dumb otherwise she wud not hv been doctor. She is so hood at heart n helpful. She never called Avni, Seher n Yamini behenji or taunted them due to their clothes which girls wearing clothes like her r shown doing normally. Wat is her back story? Luks like Rose also has bad past but she hides her pain wid her bubbly nature. Hope she don't run after dat MCP Sameer cuz she deserves better.

regarding Rose, i dont think she has any mystery...she is there for comedy i think...they have wasted Prateek too, he has nothing to do

I hv watched S1 n Preet has died wid Anshuman. But Yamini has a back story n once she talked wid betrayal.