I think she mixed that thing that Rana usually takes (the one Shivlali puts away in that top cupboard in the kitchen). Do u guys remember it...so yeahh i think she mixes that into Param's milk.
Param has been nice enough to Jhanvi sooo farrr and i was curious to know why he was being soo cruel to her and like raping her without having any concern of her wellbeing in the Promo segment. I think my questioning is answered from fridays episode. I think, because Jhanvi tricked him, he got really pissed off and thought...no more! im just going to get what i want and ill trick her just like she tricked me.So he tricks her and takes her to that farm house.
In terms of Surya, well i think Sujji has pointed out some really good alternatives! It can be either one of those :-)