Dylan King said, "Tommy is my son. Of course, I hope he can be with me."
"Really?" Oliver frowned, "You want to take Tommy away, not because you like Aunt Emma?"
The child's words startled the adults. It was also because the adults didn't avoid him while discussing Emma Smith and Robert Thomson's matters, and little clever ghost Oliver overheard them.
What did he find out? That Tommy's biological father is Aunt Emma's brother-in-law? Aunt Emma's brother-in-law likes Aunt Emma and wants to steal her from his uncle?
Oliver had seen a lot of urban emotional family dramas, and in those films, several brothers fought for one wife. So, he naturally extrapolated and applied those things to his Aunt Emma.
And now, this suddenly appearing uncle wants to take Tommy away. Hmph, don't think he can be fooled just because he's young! If he's not interested in adults, why take the child away?