Yet, she reacts positively when the Warden agrees with her and pays her compliments. She’s more mercenary, and you get on her bad side by helping people. Be sure to check the link at the bottom if you need a list of her Gifts to help you along. The unique gifts (Flemeth’s Grimoire and True Grimoire) seemed to boost approval much more on the console than they do on the PC. This is for the PC version, but it should get you close on console, as well.
The approval rates vary slightly from the PC. Note: I had an opportunity to play on the PS3 recently. Don’t read it if you don’t want in depth information on the character. Obviously, this post contains spoilers for Morrigan.
(Updated on keeping Morrigan at “Love” status on the approval bar and the True Grimoire.) There are posts for other characters as well.