Fallout 3: Resetting My Home Theme? (PC)?

I recently blew off the head of a dead person on the floor of Tenpenny Tower while I was next to the lady who sells the home themes. At the moment I have the Wasteland Wanderer theme and I don't like it that much, so when I try to change it now, i'm not able to talk to her about the themes I can buy from her. Please, is there a way to solve this?