My friend hates her sister in law

I am a Pathan and my friend is from Jhelum Pakistan. Her brother married a white British girl and really despises her. Both her parents love there daughter in law a lot and suck up to her and applaud her for all the actions she does. At first she thought she was a decent and a kind hearted person but it turns she told me she is a right nightmare to live with. Her brother and his gori wife live under the same roof of her parents house. She tells me that she acts prestige and stuck up and expects validation all because of the colour of her skin. Her parents always compliments there gori daughter in law when it comes to wearing traditional clothes or speaking a bit of Punjabi and Urdu but my friend and her sister don't get the same compliments from her parents. They always put her on a pedestal and compares my friend and her sister to the gori. Both her parents, aunts and uncles seek a lot of white validation. But I cheer her up and tell her that God created you beautiful and perfect in his own image. Just because you don't have fairer features doesn't mean you are less prettier any man would find you attractive.