Tonguez
A suffusion of yellow
For me the only big issue in your list was taking away a feat that had already been in play. You say you can tell other players are affected too, so discuss it with another player you trust and see if anyone else really has the same issues. If they do then after a session initiate a review, praise her for the good decisions and then express how YOU felt when her rules interpretation resulted in YOUR frustration - see how she responds and if anyone else chimes in