I think Pragya got a hint that Ranbir likes her. Thats why she let Prachi to clean Ranbirs wound so that they can spend together. Maybe now pragya will try to explain later this to prachi too but I am sure she wont believe it just like she ignored when Sahana talked about it.
I know its too much that prachi still doesn't have any attraction, but personally I would love that Ranbir at first falls for her only then Prachi. Its just annoying that they don't show any progress from Ranbirs side.
The best itv love stories are where the guy falls first. It's all the more romantic.