Hmmm. An interesting point, katy_did. So, what did Amanda know---or fear---when interrogated by Mignini on December 17, 2007?
The first time Amanda spoke of her bath mat boggie---while interrogated by Mignini in prison---she may have feared, without any confirmation, that her bloody footprints had already been discovered, in the corridor, her bedroom, or the bathroom. And it may have been that Mignini's questions to her suggested such a state-of-affairs.
It would be interesting to know exactly what question Mignini asked her, which led to her account of the bath mat boogie. Was she explicitly answering his question....or, instead, digressing, to explain feared Luminol tests of the past, or in anticipation of the next day's Luminol tests?
///