I can think of a couple possibilities. It may be too much for Lee to keep up with. And, she might have been receiving some (or a lot of) offensive messages.
Last time I checked, the family was still looking for a couple of personal assistants to volunteer.
I noticed that many of her friends' myspace's went to private since they were posted, also. JP's was still public as late as early Saturday morning. By evening time, it was set to private. He probably got wind that a lot of people suspect he's the daddy, and doesn't want to get harrassed.