Well first of all if you killed your child you probably would be able to carry her on your hip and walk around like she was sleeping. But true, on holiday they would have suitcases at hand in which to carry the body and probably noone would ever think twice seeing a man with a suitcase at a resort.
My personal theory of MM is that her parents drugged her to get her to sleep. People have shouted at me over this before saying its a crazy idea but I think they killed her by accident.
What does point to them not killing her though is that they popped back and forth during the dinner and consumed wine etc. That certainly looks irresponsible. If they wanted to leave a window of opportunity for an abduction like scenario I would think they would have not go back so much.
So I think what happened really is that the abductor used something to "knock out" MM but the parents had already given her something and the overdose killed her.
I think that's why the parents seem guilty. Deep inside it seems to me that they know she is dead.
I'm just back from a holiday at a resort with my family (in Florida). There were people walking around every evening with small children sleeping on their shoulders, or being pushed (asleep) in strollers, and people with suitcases or large duffle bags. I paid no attention to any of them, and if later that night someone had said "did you see anyone carrying a small child or a suitcase" I would have to say "I don't know, probably." I certainly couldn't have described any of the parents or children. Why would anyone pay attention to something so ordinary? I think it would be very easy to get away with.
If the group had this planned baby-listening routine, I am sure they'd feel obligated to stick with it. They couldn't really say "tonight we're not going to check on the kids" because that would be highly suspicious when she later turned up missing.
As to their behaviour - I think of Paul Bernardo and Karla - they brutally raped and killed a teenage girl, left her body in their home and joined their family for Easter dinner. Apparently behaved perfectly normally and partied with everyone. Went back later and disposed of the body. People who are capable of killing are remarkably good at acting normally, it seems.
Earlier today I watched the video of Kate and Gerry being interviewed by Piers Morgan. Kate is pretty much silent. Piers asks Gerry about leaving the children alone. Gerry repeats his comment about it being like leaving kids asleep in their bedroom while you're in the back garden (assuming your back garden is down a flight of stairs, around a corner, through a gate and on the other side of a large swimming pool where you can't even see the kids' bedroom).
Piers says something like: "Well, not really. Your home would presumably be locked up and secure. This was an unlocked flat with all kinds of strangers walking past and able to get in." Gerry says something about the kids' routine (which frankly makes no sense at all - so you need to leave them in an unsafe environment to keep them to a routine? Really?) and then says that this distracts from the search for Madeleine. He's clearly completely unwilling to accept any responsibility at all. I mean, even if she really was abducted by a stranger, surely a parent would feel some guilt and be devastated by the very inappropriate decision to leave the children alone - knowing that if they had not left the children alone, she wouldn't have been abducted. But he continues to insist that they did the right thing.
Tink