IMO I still believe Mrs Fenn was confused. On the Tuesday night Madeleine was woken by the twins crying. IMO Amelie woke grizzled for a bit waking Sean who then cried, waking Madeleine who called Daddy. She then went into the McCann's bedroom and slept there the rest of the night.
I don't think Mrs Fenn was confused I think the PJ were making assumptions, always supposing we have been allowed to read the correct version of the translation.
For example Did Mrs Fenn mention Madeleine by name? It must also be borne in mind that there were other people moving around in the resort at the time - not one of whom mentions hearing a crying child.
Not even the Irish teenager nipping out for a smoke, or the Tapas waiter hanging about doing likewise.
To update the information just a little ~ had the PJ bothered to track Brueckner (or A N Other with a similar profile to his) down instead of going away when he didn't answer his door to them ~ they could have asked him pertinent questions, the answers to which might have made a 'timeline' really meaningful.