I guess I was looking at it not from a level of suspicion, but from a level of capitalistic greed. If these two women might (not saying they are, just speculating here) have determined to turn a profit with inside information.
If we've seen nothing since beautiful Caylee disappeared, is that there is no level to which people will sink to make a buck off a little child.
I don't see how getting bat phones would give anybody more inside information than just hanging out with Terri.
It seems to me that it's much more likely that Terri does hinky stuff than that many people, including her husband and closest friends have all decided to make her look bad because they're the ones who are hinky.