she knows that pallavi can GIVE IT BACK TO RAGHAV... remember earlier both of them got him to be quiet... also pallavi just needs to marry of raghav is saying that they both loved each other and IT WAS PALLAVI that did not want commitment.. raghav ne khud hi gaddha khoda hai.. i love u pallu kar kar ke..ab he can either say that i was lying and lose his mom forever...or say that no i love pallavi and stick with her in ONE ROOM..
Why would amma n ayi want them to get married when thy know that they hate each other n after what raghav did ???