It's sad, but people can be so narrow minded and jahil.
i come from a kashmiri family too, into the practise of marrying within family. my mum's mum, is punjabi from sialkot, she was never really accepted and was divorced because of family pressure on my nanna-abba. my mum was about 2 at the time and didnt see her mum again till she was around 17. they remained and remain in contact so everyone accepted this but i dont think they were too happ about it.
a few years ago, my sister went to pakistan and had an arranged marriage, it was arranged by my mum and nanni ma and it was outside the family to a punjabi guy from faislabad, oh the uproar. many of my relatives fell out with my mum and nanni ma, we saw a lot of their true colours come out, and things have never been the same. my sister sadly, divorced the guy(another story, lets not go there lol)and is remarried(within in the family this time)so people are somewhat happier. but things are not good between my family in pak and my nanni-ma,she believes they really hate her. and my mum too is hurt by the way our relatives acted, in particular her younger brother.
what can you do? you find out who cares for you and who just cares for themselves, and you either accept it and decide not to care about those relatives either(meaning dont take what they say or do personally,dont give importance to them) or you let it get to you.
sometimes, time is just needed to let things thaw a bit, so best of luck to you and i hope you are happy together, be strong and be happy :)