And, as I have repeatedly posted, I also think it is beyond strange that the twins were not woken up. Firstly, to check they were okay (an abductor had been in the apartment, remember?) and had not been molested and secondly to ascertain whether they had been disturbed and had seen anything. An intruder might have disturbed them enough to wake them up. And in actual fact I am pretty sure it is reported that the twins did not wake up at all which is amazing when you consider the amount of commotion in that apartment once the alarm had been raised.
Why did they not wake up? Were they exceptionally heavy sleepers? If, as Kate later suggested, the abductor could have drugged Madeleine to facilitate an abduction, then presumably the abductor could also have drugged the twins, so why not get toxicology tests done? You would also most definitely want to rule out any molestation possibility for the twins but this does not seem to have occurred to Kate which again is incredibly odd.
So it is possible that the twins had been drugged but if not by an abductor then by whom?