Shock shock mat ho! Ofcourse she has no feelings for that gandha man. Though this may not happen at all but what IF Sin puts seeds of doubt in to Amar's mind regarding Divya and Samrats once-upon-a-time friendship?? If Divya is firmly against Sam-Kam's marriage then Sin could take advantage of that and make it look as if Divya still has feelings for Sam which is why she doesn't want him to marry Kam.
I know its a far-fetched idea because I think Divya might just agree with little convincing from her gadha husband.