Namechanger. 
My DD, who is just 3 was playing upstairs early on. All of a sudden she let out an almighty shriek and screamed help. It was the sort of cry your child makes that makes you drop everything (in my case a knife and some lemons) and dash. I dashed up as she was running down the stairs. She literally jumped in my arms and looked terrified.
i asked her what was worng and she said that was a man in her room. I said whta did he look like, she said bigger than her with blue hair (she is unsure of her colours 
) My first thought was ghost. 
I gave my DD, 10 the phone and said if I scream, take the others and run out of the house. 
Adrenalin took over and I ran upstairs and got my baseball bat and searched every nook and cranny, no one there.
I came down and reassured everyone that it was probably the cat that spooked her whilst shitting it I asked DD what the man said, she said he said, this is my room and my bed.
reassure me please. 