Ok, in part 3 of Cindy's FBI tape at 2:56 we have her discussing a change of addy card which was sent to the Hopespring address in AH's name. Now here is where we get a ton of insight into how Cindy's thought processes work. After Amy relays the story which Casey told Amy about how the A's were having problems and Cindy and George were giving the house to Casey, Cindy's mind moves right over the fact that Casey lied through her straight white teeth (even after the agent brings that up) and jumps to how odd it is that Amy is saying this. She then goes onto use this as a jumping stone to the 'generic Zanny nanny theory' tying it into Amy and Ricardo's apartment while using the pic (which casey said was taken at Zanny's) as proof. The agent again asks her if she quesitoned Casey about telling Amy the house would be hers to which Cindy responds "No, I didn't think it was relelvant at the time" or something similiar.
Not one time does Cindy stop herself and say, Casey clearly concocted a whole script and followed it. Not once does she say that Casey is at fault for this. Instead she goes on and on about 'codes' Casey gave her and her attempt at deciphering Casey's story. She takes everything Casey tells her at face value with zero qualifications required. It's a very sad thing to realize your daughter has been lying to you in such a magnificent manner, but it's even sadder when in the face of blaring truth, you still choose to worship the devil.