First Muslim Judge Sworn In With Quran : Sharia Law Conflict?

This is interesting in that it's not so much of not using the Bible to be sworn in as a New York judge Carolyn Walker - Diallo, but using the Quran as she is obviously a Muslim. 'First Muslim Women Judge Carolyn Walker, hand-picked by President Obama sworn in as judge of the 7 Municipal District, Brooklyn by holding the Holy Quran at Brooklyn Boro hall on December 10, 2015.'

But the question that remains, is she a devout Muslim to the point that she believes Sharia law must be the law of the land?

'Since the Quran forbids all law but Sharia Law, I guess she will head the first  Federally sanctioned Sharia Court?'

I believe it's a reasonable question that she must answer, right? Well, that's not necessary now as she has already been sworn in and a personal choice of Mr Objma. Really, who knew?

Now she has pledged to uphold the law of the land and the American Constitution but according to Islam as dictated in the Quran?

Quran 2:191 - 193

Isn't there something wrong with this picture? In a sociality that is founded on Christian values and 99.8% Christian and or non-Muslim, how is it that we are now to believe she will be able to decide cases that conflict with Sharia law as stated in the Koran?