And Laila may not be living in the haveli anymore. But bloody hell none of us thought of her as a possibility! Cz she LIVED in the house for weeks! Loitering everywhere freely! Who better to betray them than her now!
Cz considering all the information the stalker already has on the 2 of them he most definitely would know about Laila and the connection and that she stayed there!
So my guess is that the stalker may not have involved her fully with the truth. But terrorizing Paro and finally promising to kill her WITHOUT harming Rudra would most definitely get Laila to join hands with him!!
So feel free to share ur thoughts!