Virtue overrides the normal behaviour of NPC's and Sim hasn't released a new version of virtue since that component was added. Sim posted how to change this for me when I had the same problem (except I had hacked her cre manually) and it's quite easy to do. Check here for the workaround.
I've tried installing Virtue over the G3 NG Jaheira Tweak and vice versa, but either way, she still behaves as though she were TN. Am I missing something?