In Gabriel Said Reynold's new books, he actually points out that Neuwirth is part of the movement to keep the most critical scholarship out of the public eye, and to downplay a multiple authorship. She has ties to modern-day Nazi supporters too. During and after WW2, the Nazis lied about manuscripts and photographs being destroyed (they weren't). Also, in his The Qur'an and its Biblical Subtext he takes apart her school of thought which follows the old Nöldeke timeline of Meccan and Medinan suras. This is based wholely on the Islamic literature and tafsir, making it a medieval theological exercise. She doesn't take John Wansbrough seriously either.
You can check the thread "Armstrong on KFR" for some more posts I did on this, and sample pages on Reynolds.
De los sus ojos tan - fuertemente llorando,
Tornaba la cabeza - y estábalos catando.
Poema del mio Cid (lines 1-2)