“No. It’s mine!!”
They keep this “conversation” going for a while before there is a screech and a wail.
“Figure out a way to share it,” I call from the other room.
“Madeline,” says four-year-old Seamus, who puts on a very reasonable and emphatic voice with his two-year-old sister. “I want you to share that with me now.”
On some level, I can’t blame her for saying no. Seamus inflects his “share” with a lot of muscle and possessiveness. They are stuck.