It could definitely happen and totally fits into that whole rumor about Yamini being like the mom from Beta.
But the father seems to genuinely love Hritik, much like the other brothers (excluding the oldest cousin). And Tanvi too loves Hritik. She's not okay with him having an affair. In her POV, she can't do anything right now to stop him because then he'll leave her, she plans on restricting him once they get married because then he can't leave her. She definitely likes his money for sure, but I think she also genuinely likes him. (sidenote, maybe it's just me, but I felt like Tanvi and the younger brother -- the one who was watching the video of Viren stealing from the company with Hritik) -- seem to get a long a lot better and there seem to be some vibes there?).
But the him getting married before 25 doesn't make sense to me. Why kill him after his marriage? Why not kill him earlier?