A pregnant woman goes into a coma

A pregnant woman goes into a coma moments after she gives birth to twins, one boy and one girl.
When she finally wakes up several days later, she cries out frantically to see her children.
The doctors come to her, and the first thing she asks is "How are my children?"
"Fine" says the doctor, "your brother named them".
She thinks to herself, "Oh no!" "My brother's an idiot" and she asks the doctor "What did he name them?"
The doctor says "He named the girl Denise"
And she thinks, “Well, maybe I misjudged my brother... Denise isn't such a bad name"
What did he name the boy?"
Replies the doctor "De nephew."