The mentions of the other little girls make me nervous. Here's why:
Jaycee was a kidnapped child, however, her girls were not, technically.
Therefore, her children were never put out as missing kids.
PG kept up this charade for 18 years, 15 of it with kids that officially existed nowhere, and the whole of it with a high profile abducted child.
PG is not the sanest, smartest man.
So, there are two little girls out there that may be lost, but may not be missing. They may be children of someone who's missing. This is horrifying and may be a suspicion of LE, one of the reasons that there is very little out there about these other girls. They don't want to admit that they know they might have had another Jaycee all this time. This is the aspect that I hate, knowing that it's over, but in cases like this, it's never really over.
ETA: I also end up thinking that if PG could get away with it for so long, there are others. There are most definitely others. Pedophiles tend to find each other, and I think it's entirely possible that the younger kids could have been "on loan" from a fellow freak.