What is with the camera/picture in the beginning of this episode?

S6E11 - the perfect dress. When Rory is leaving to go back to Yale and she's talking Lorelai outside the house. They start out facing each other with a wide shot and all looks normal and then we start getting only close up shots of each face and they flip back and forth. Rory looks like she's filmed on set and Lorelai looks like she's filmed with a back drop behind her at an entirely different time of day. I'm not nitpicky about the ridiculousness of this show 99% of the time but this episode always grates on me for this part. I assume they had to reshoot someone's part for some reason but this many seasons in I'd think they had the resources and ability to make it look just a little more plausible.