I find the notion of treating Kate McCann as a suspect appalling.
Please, be patient, all is not what it appears to be!
I can't believe or accept that Gerald McCann did not tell Kate what had happened, and what was going on.
What we have got here, is a large number of people, including the parents, David Payne, Mathew Oldfield, Russell O'Brien, Jane Tanner, Serge Malinka, Robert Murat, at least one member of the Ocean club staff, Hewitt, Christian B (and one of his girlfriends, in cahoots with one another in a cover up!
I also suspect the priest of St Vincent's church in Pria De Luz, who took the McCann parents confessions, before giving them the key to the village church so that they could take refuge overnight on the pretense that they were receiving harassment from the media at large!
Priest vanished into thin air, just like Christian B, and of course Madeliene McCann!
Everything points to some significant link between Madeleine McCanns demise (as alerted to on evening of 3rd May 2007), the priest, the village church, the derelict building directly opposite from the front doors of the church, Gerald and Kate McCann. There must have been some telephone communication between Christian B, and one or other (or both) parents, which ended up with the McCanns at the church (St Vincents) overnight and Christian B (and potentially another), over the road inside the derelict building (5 Pescadores ...)
I think the parents, one or other (or both), were talking to whoever had got Madeliene (through prior consent, or arrangement, but that something happened which led to a demand for a large amount of money from the parents (they ended up being blackmailed)...