This statement has been back and forth between english and Portuguese several times now more than likely with a mix of British and american english. There is going to be confusion.
As for the Paynes daughter. I don't think it is right to link to her photo and discuss her. Besides which there is no way of knowing if that girl is really her. I know the implication was could she have been swapped with madeleine, but she was at the kids club according to the files, and she is not that similar to madeleine. The nannies identified madeleine as being at the kids club that day, they had sent the previous few days with her and the Paynes child. They are not going to be fooled, and its unlikely a four year old would have the ability to pretend to be someone else for the day.
As for madeleine falling down the steps, why would the mccanns cover that up? They did not cover up being out for the evenings so why cover up a fall? And they still had to come up with and execute a plan to hide her in about five minutes.