Meh, first time she is batty but second time she KNOWS what she's like after watching TV and stuff so she'll just be giving them what they want.
I don't believe half of the families on there anyway. Some of the ways they act seem so contrived its not believable.
Of course I also believe that half of the bad auditions on American Idol are plants, so maybe I'm just a Reality Show Conspiracy Theorist.
EDIT: Well actually I'm not sure about Trading Spouses, but I know Wife Swap has got to be mostly fake. I can't stand Trading Spouses though, the thing is so poorly edited... whenever the "moms meet" at the end, they cut the audio out of the conversation to make it look like the mothers are having awkward pauses.
I also must mention that I only watch these shows because my wife does. 😉