So we went ahead and got a 3D ultrasound. We decided we wanted it done and did all our research and are completely comfortable with its safety. Besides, it's probably too late for her to grow a third eye! We went to a wonderful woman's health care center and we were really happy with the experience.
First we got our 100% guarantee that she is definitely a girl. We won't post that photo here, but assume that she wasn't shy about it. The other photos are in the web album. I also added two other ultrasound photos to the "ultrasound" folder.
At first the little bugger wouldn't cooperate. Her face was pressed up against the side of my uterus, preventing any fluid from getting in front of her face to give us a good look. So I emptied my bladder, coughed some (I have a slight cough), and we jiggled my belly, and voila, baby face! We think she's adorable, and the tech agreed, so we're not biased at all. She actually said that she can tell the cute from the not so cute and Maeve is CUTE!