Due to the massive blood loss during the delivery, she had gone unconscious shortly after they were delivered.
She awakens to a nurse who congratulated her on having the kids and told her that her brother had come in and named the children for her.
“Oh no” the woman said, “My brother is a little slow…he’s not entirely all there”
“Don’t worry” says the nurse, “He actually picked good names, the girls name is Denise”
“That’s not that bad” says the woman. “What’s my boys name?”
The nurse replies “Denephew”