Where is my Brother?

While we were in the car, Kristine was asking my Wife, "Mom, where is my brother?"

"You don't have a brother."

"Then who is xxxxx?"
"They are your cousins."
"I don't want cousins. I want a brother. I want an older brother."
"You don't have an older brother because you were born first."
"I don't want born first. I want older brother."
"But you already came out. So you are born first, you are older than Kaelynn."
"This means I am leader?"
"Yes. You are leader."

Minutes later..........

"Where is my brother?"