You have to take her with you through most of the Tower and after you get out of the Fade, I think you have an option to re-select your party without her in it. If it's not right after the Fade, it's right after the conversation with Cullen. Either way, if you miss that chance to drop her, just before you head into the big battle in the Tower, head back to the room where you first met her, and you can reselect your party without her in it.
After the last battle, I think you can refuse her help in the last conversation you have with Greagoir, though I've never tried it.
Modifié par lizzbee, 24 juillet 2010 - 02:09 .