Well...
I've never heard the great kat.... but...
I doubt she could've had a bigger ego than Beethoven himself. I mean this guy would turn down chances to play for royalty just cuz he thought they were not worthy! He considered himself on God's level because of his musical ability! (and by the way - most of Beethoven's health problems came from spas and sanas they had back then. Although the water at those places was claimed to soothe you, studies show that it actually contained lead in it! This lead seeped into Ludwig's body and caused him to die at such an early age, with the help of trauma from his father as a child)