Thanks everyone! This one kind of made me nervous because normally I get to hide behind the camera, or just have a quick scene. You'll notice Jillian sat nice and still but I moved around a lot! I think I prefer remaining anonymous.
It took us about 3 weeks to memorize the dialog, about 10 minutes each day (usually when I was driving her to daycare), then another week to practice so we knew it inside-out. A funny side effect is that Jillian ended up learning all my lines as well, so she can rattle off the whole 6 pages of script herself if you ask her! And since Addie was in the car, she knows about 75% of it too, although the long passages are tough.