Horror DP fic scene

This is a scene from a DP vampire horror fic I'm thinking of writing. Since you probably have no idea what's going on here, I'll write a little of it. Here goes.

"Jazz! JAZZ!" Danny ran through the halls of the castle in blind panic, screaming for his sister. Her turned a corner and, with great relief, saw his sister at the end of the hall, smiling at him.
"JAZZ!!" Danny ran and hugged his sister tightly, beginning to sob. "I found Sam and Tucker, and they were turning into MONSTERS! It was horrible! I had to find you, make sure it wasn't happening to you too! I'm so glad to see your okay!" Tears ran down his face, and he happily cried into Jazz's shoulder.
'Shhhh..." Jazz said, taking a hankerchief out and wiping away Danny's tears. "It's okay, I'm fine. there's no need to worry. We'll find Sam and Tucker, and find a way to help them." She held him at arms length and smiled at him. "Everything's gonna be just fine." At these words, she grinned broadly, baring to pointed teeth. Her azure eyes flashed red, and the trusting smile on Danny's face turned to a worried frown.
"Jazz, are you okay? Wait, stop! WHAT ARE YOU DOING?!! STOP!!!"
It might have been quick, but Danny's terrified scream echoed through the castle for what seemed like hours, reaching the ears of Sam, Tucker, and Jazz, his real sister.

Yes, I KNOW it's creepy, scary at most, but I can't get the idea out of my head!*ducks as pillows are thrown at her*

Danny Fenton, Jazz Fenton, Sam Manson and Tucker Foley are copyright Butch Hartman and Nickelodeon