This is what happens when people feel that they are helping people. The police are called and a person is subjected to many questions. I feel that sometimes people need to learn to look for the signs. Did this girl look scared or worried? If not probably just a real dad and his daughter.
Wouldn't they have known by simply asking the girl her name and verifying it with the father or maybe they saw something more that made them feel the police needed to be alerted. Even though this was the father it does not mean incest doesn't happen. I am not saying that was the case here but the world is a difficult place for young people and its good that they are not afraid to call the police if they feel they are needed because its better to be safe than lose yet another young soul to sadism.
I'd like to see the stats that the hotel chain said they have, province that they have stopped pedophiles as compared to the times they have falsely accused someone. It seems unlikely any experienced groomer would bring their victim into the lobby when checking in. They know there are cameras there, after all.