Well, Yvette was very talented, that's undisputable. Music was really HER life. She would play musette of course (like many others), but she was also able to play classical pieces with great sharpness. She even recorded in 1977 a LP in Nashville with Charlie Mc Coy (featuring tracks such as Orange Blossom Special, Release Me, I'm So Lonesome I Could Cry, Rocky Top, Amazing Grace or Tennessee Waltz, to quote only some examples).
One should remember that she started as a pianist, and she was able to play piano and accordion at the same time !
My father saw her playing for the first time during the second world war, in 1943 (she was only 21), at a location which was called La Terrasse, right above Pau's river, in the very south of France. He was just 17 and already fond of button accordion, and he told me he was very impressed by her performance. Nice memory despite troubled time.
Later on, he would meet her again many times in the Paris area of course, but that's another story...