Those of us who have actually brought up children junecampdav know that special cuddly toys which they keep with them and won't be parted from provide those children with comfort - not adults.
We know that if you need to pick up and so disturb a sleeping child you also need to ensure that its special toy is picked up as well to ensure that if the sleeping child wakes up it will have that safe and comforting toy with it and so provide it with security that all is well.
I expect anyone who has the idea to "abduct" a sleeping child from a room also containing its 2 siblings would know that as well. Its rather unlikely that he /she - who presumably has studied children and knows what he / she is about - would not be so stupid as to leave such a special toy which the child presumably had with her on a windowsill.
I also suspect that if a toy did contain the scent of a missing child the last thing most loving parents would do is wash it.
Tell us - do - how you know people who you've never met , don't know from adam , and are not being privy to evidence about (just press comment and speculation) are guilty or not?
With your special gift you should be able to make a fortune - maybe Mr Branson might see some commercial possibilities there.