The issue for me is the use of the title. Sure, it was given to her fair and square, but given that she's made it clear she's not interested in being part of the firm (maybe the family, but not what it stands for and the work it does), then what's with the title? I'm not saying forsake it (or that it should be taken from her), I'm saying that there's a time and place, like when she is in England and involved in family business or formal occasions.
Further, for someone who seems to want to focus on empowering women, gender equality, inspiring the next generation and all that, then again, what's with the title? On the one hand it screams of class distinction, even putting her on a higher pedestal because she has a big fancy title. On the other, she only got it because of who she married. Is that a good message for young women? Does it support her desired image of a strong, independent woman? To me, it doesn't.
The fact that she's using it in this new life, in another country, and in association with the work she's doing and the brand she's building, is contrary to everything she supposedly stands for, in my opinion.