One thing does come to mind after watching Imarti's illness in flash back, its scary but I think that the headaches that Mini gets maybe a sign of a Brain Tumour or worse. I think that HS will recognize the symptoms as he has witnessed them 1st hand with Imarti.
The way they are showing things, I won't be surprised at all if this will follow after HS and Babita get Married.
Its scary but maybe after the Marriage this will be a test for HS and Babita. Lets see.