I think you should think about what triggers these feelings inside you. why do you have the need to prove your point?
I wear hijaab too and I know what kind of reactions we get from ppl around us - be it family or strangers, Muslims or non-Muslims
the most important thing is to be happy with yourself and have a strong identity. both for you and your niece. I believe she has every right to reject a proposal at the age of 19 when she is still in search of her own identity. our religion gives her that right…
is the proposal from UK from among your friends or in-laws? why do want to convince her?