I hated what she did in the Ways. One of the things that truly angered me.
The actual Two Rivers stuff I was okay with, up until they got married. Everything after that I couldn't stand.
The worst thing about Faile is what she did to Perrin's character. The next 10 books were whining about how he couldn't understand her and then brooding when she was captured. Whine, whine, whine, angst, angst, angst.