Frank Zappa's Widow to Sue Apple?

I found this article stating that Frank Zappa's widow is unhappy with the quality of his music catalog via iTunes. Granted: the bitrate iTunes generally uses isn't that great. But, considering that a lot of the items in his catalog have been remastered, could the problem actually lie within the remastering, which may be squeezing the dynamic range and life out of the songs before they hit Apple's store?