Lacao's dog had 'some training' in tracking. Kate doesn't remember when she handed over the blanket; she says so.
Reading through the statements, the Inspector says that he arranged for the twins to be taken from their cots so that there could be an examination of the bedroom, he was there along with the forensic photographer who took the photos. The forensic photographer was there very early on, before the dogs. This was also taken from Silvia who was the interpreter she says the twins had been taken from their cots and Gerry says this -
She thought that the child's mother was devastated, the father was worried and also asked to notify the press and to get dogs to search.
So I don't think the dogs had arrived then.
The forensic photographer was concerned about people entering the crime scene so they had the place cordoned off, I doubt very much if Kate would have been allowed to nip in and get the pink blanket, which was part of the crime scene.