Please read this article by Terri's lawyer, Barbara Weller. An excerpt (emphasis mine):
Terri was sitting up in her lounge chair, dressed and looking alert and well. Her feeding tube had been plugged in around 11 a.m. and we all felt good that she was still being fed. Suzanne and I were talking, joking, and laughing with Terri, telling her she was going to go to Washington D.C. to testify before Congress, which meant that finally Terri’s husband Michael would be required to fix her wheelchair. After that Suzanne could take Terri to the mall shopping and could wheel her outdoors every day to feel the wind and sunshine on her face, something she has not been able to do for more than five years.
At one point, I noticed Terri’s window blinds were pulled down. I went to the window to raise them so Terri could look at the beautiful garden outside her window and see the sun after several days of rain. As sunlight came into the room, Terri’s eyes widened and she was obviously very pleased. At another point, Suzanne and I told Terri she needed to suck in all the food she could because she might not be getting anything for a few days. During that time, Mary Schindler, Terri’s mother, joined us for a bit, and we noticed there were bubbles in Terri’s feeding tube. We joked that we didn’t want her to begin burping, and called the nurses to fix the feeding tube, which they did. Terri’s mother did not come back into the room. This was a very difficult day for Bob and Mary Schindler. I suspect they were less hopeful all along than I was, having lived through Terri’s last two feeding tube removals.
Suzanne and I continued to talk and joke with Terri for probably an hour or more. At one point Suzanne called Terri the bionic woman and I heard Terri laugh out loud heartily for the first time since I have been visiting with her. She laughed so hard that for the first time I noticed the dimples in her cheeks.
The most dramatic event of this visit happened at one point when I was sitting on Terri’s bed next to Suzanne. Terri was sitting in her lounge chair and her aunt was standing at the foot of the chair. I stood up and learned over Terri. I took her arms in both of my hands. I said to her, “Terri if you could only say ‘I want to live’ this whole thing could be over today.” I begged her to try very hard to say, “I want to live.” To my enormous shock and surprise, Terri’s eyes opened wide, she looked me square in the face, and with a look of great concentration, she said, “Ahhhhhhh.” Then, seeming to summon up all the strength she had, she virtually screamed, “Waaaaaaaa.” She yelled so loudly that Michael Vitadamo, Suzanne’s husband, and the female police officer who were then standing together outside Terri’s door, clearly heard her. At that point, Terri had a look of anguish on her face that I had never seen before and she seemed to be struggling hard, but was unable to complete the sentence. She became very frustrated and began to cry. I was horrified that I was obviously causing Terri so much anguish. Suzanne and I began to stroke Terri’s face and hair to comfort her. I told Terri I was very sorry. It had not been my intention to upset her so much. Suzanne and I assured Terri that her efforts were much appreciated and that she did not need to try to say anything more. I promised Terri I would tell the world that she had tried to say, ”I want to live.”
As usual, Catez has all the details (she's an amazing researcher!).