Disclaimer: I don't own anything but the idea
Spenser came bursting through the door.
"Spenser why do you look like you've been running," Grand-dad asked.
"I have something to show you," Spenser said, "You can't take Carly"
"Now Spenser we've been over this before," grand-dad replied, "I love you but you're not responsible to take care of your sister"
"Carly is not my sister," Spenser announced and Carly gasped.
"What do you mean," Grand-dad asked.
"Carly is my daughter"
"Okay I have to say it. WHAT!"
((Flashback… 12 years ago))
Fifteen year old Spenser got up when his girlfriend ccame in.
"Spenser we need to talk," Helen said, "I just found out I'm pregnant"
Spenser gasped. He was going to be father.
Spenser and Helen talked it over with their parents. They decided that Spenser would act as Carly's brother instead of her father. Helen would move in with them.
That seemed to work fine. Helen went into the hospital at 10 o'clock December 21st and gave birth to Carly on December 23rd at 4 o'clock in the morning. Because of her labor and delivery she never woke up. She fell into a coma and died. Spenser raised Carly after that. He let his parents claim parenthood to her because… well for her sake.
"And I don't suppose you have any proof of that," Grand-dad said, "Come on Carly lets go"
"NO. I'm not leaving"
"Carly your brother is-"
Spenser handed him Carly's birth certificate.
Grand-dad shook his head disappointed. Not knowing what to say he left.
"I killed my mother," Carly asked
Spenser hugged Carly.
"No Carly. She died from bringing you into the world but it was not your fault"
"Did you always love me Spense?"
"Carly," he told her, "You were and are the best thing that ever happened to me. What do you say we go get a smoothie from the groovy smoothy and then go see a movie"
"Okay… dad"
"Car?"
"Yeah"
"You can call me Spenser"
"Oh thank GOD. Dad sounded too weird"
Father and daughter both laughed and went to the Groovie Smothie as brother and sister.