The guitar is both a classical and a folk instrument. Likewise the violin. What you say may be true, however surely you know there are Middle Eastern folk musicians who play this instrument. Turku Eurasian Folk Ensemble, for instance.

Who are you to discourage someone from learning to play a new instrument? So what if it's different, or difficult. That's part of the fun. It's a little thing called Accomplishment.

I do not know who Nagwa Fouad is. I am, however, a pretty darn good dancer. So go have a Coke and a smile. :-)