Sadly, I do not own Kim Possible, but I do own Tiffany. Thanks to Twila Starla and JusticeIsBlind13 for the review and alerts! You guys rock!
Enjoy!

"Good morning girls! How was your night?" My dad greeted us. I told him it was great by giving him a huge hug.

"I'm not a girl," Shego retorted back.

"My bad, Shego."

"So Dad, did you finish the surprise yet? Did you?" I looked around his messy lair.

"I did, but you're not going to see it until you help daddy fix an itsy bitsy problem," he responded.

"Sure, dad, anything. That's why I come here every chance I get."

"That's my girl. This way!" he led me to a back room where there was a large hump of metal that was obviously supposed to be some sort of laser.

"You call this an itsy bitsy problem?" I inspected the damage.

"A few months ago, Kim Possible destroyed it, and all of the work that I've put into it just seems to make it worse. Do you think you could help your old man out?"

"Dad… you're not that old. Let me take a quick look at it."

"Thanks Tiff! Just do the best you can honey," he and Shego left the room to continue their next mission.

"Good luck," Shego smirked sarcastically on the way out of the door.

"Do you think she'll like it Shego?"

"Dr. D, she's a fifteen-year-old in search of freedom. Even if this was as destroyed as that laser, she'll be in love with it the moment she lays eyes on it. She is your daughter."

"Isn't it amazing?"

"Yes I'm quite shocked myself. Tiffany's seemed to grow into an exact replica of you and her mother."

"So did you find out what was bugging her last night?" my dad worried.

"Yes. She thinks – knows – that her boyfriend is cheating on her. She just needed some help on how to sort things through. We came to a plan to make that boy's blood boil." Shego chuckled.

"How could anyone cheat on Tiff?"

"Well, she does have that attitude problem."

"What problem?"

"The one where she's your daughter and wants things her way. But other than that, I don't understand it myself. She's a beautiful child – you should be proud."

"Prouder than when I made those BeBe's," my father smiled.

"Man those things were annoying. For once I'm actually kind of glad they failed. So do you think she's going to be able to fix the laser?" Shego questioned.

"I do, Shego. You should see what she made in woodshop last year. The teacher made her destroy it because they considered it too dangerous to keep in the building. I got a picture of it though!"

"Oh my gosh," Shego looked in amazement at the picture, "Maybe I should start working for her instead. You might want to start home schooling her Dr. D. Sounds like her teachers in the public school system are dragging her down."

"I've suggested that, but her mother says that it's public school under their rules or send her to a private boarding school in Germany."

"Wait this ex…friend of yours – her mother – isn't rich is she?"

"Wealthier than most, but not rich. That's one of the main reasons I left her with her mother, I knew she could be taken care of."

"If you could choose again?"

"I wouldn't have let that baby out of my sight. I would have fought for Tiff all of the way to the Supreme Court. My biggest mistake ever was letting that witch take her… Well, I guess it's time to start working. Wait until you hear about my next and best plan ever!"

"Oh, yippee."

"DAD!" I shouted from the back room.

"Tiffany! Are you okay?" he scrambled in.

"I'm fine dad. I'm finished."

"Finished? Already?" he looked over the shiny laser.

"Sorry, I didn't expect it to take this long," I wiped grease off of my face. "You really did some damage to the wiring and Kim crashed the main hard drive when she was attempting to stop you. I had to rewire and reconstruct almost the entire thing. I added a fresh new coat of paint. Do you like?"

"L…L…Like? I LOVE!" he hugged me. "Care to test it out?"

"Really?" I gasped as he tossed me the key. Shego positioned a block of cement and waved me on to fire.

"Sorry Drakken. You'll have to wait for you little test drive until you're out of jail," Kim Possible came bursting through the window.

"Kim Possible?!" My dad took into an offensive position.

"Wait, Kim. If Drakken's here, Shego's there, then who's firing off the laser?" Ron questioned.

"So good to see you again Kim," I waved from the control seat.

"Wow, a laser. Your dad loves trying new things," Kim retorted not worrying about moving out of the way.

"Well, I was considering testing it on that block of cement, but how about I test it on your face first?" I suggested turning the laser to her.

"I'm scared."

"You should be."

"You do remember the part where you're two years younger than us?"

"Then if I'm so unimportant, why do you still remember me?"

"It's not everyday that you find out your arch foe has a daughter that he's been hiding from the world for thirteen years."

"I'm fifteen."

"You were thirteen then. But I must say that last time we met, you weren't too much of a challenge. Maybe it'll be different this time?" she challenged.

"Um, KP, she is Drakken's daughter," Ron reminded.

"Oh, how silly of me! This should be over…" But I cut her off by shooting the laser into the wall. "Aw, you missed."

I just looked at her, "Come get me." Kim started walking forward but couldn't move more than three steps.

"What the?" Ron stuttered not being able to move either.

"Oh, did I forget to tell you guys? I added a special part that forms an invisible fence around whomever I want! Isn't that great?"

"Define great," Kim mumbled.

"Oh, Kim, don't be a sour sport! I'm not going to hurt you two," I promised.

"You're not?" Ron stepped back shocked.

"Of course not! If I hurt you, then what would Shego get to do? It's only fair that she earns her pay."

"I'm perfectly fine with letting the young one do it on her own," Shego sat into a chair.

"Shego… please go finish off Kim Possible before she figures out how to get out of there," my dad required.

"All right! All right, I'm going. Hold your horses Dr. D. So Kimmie, are you ready to finally end this after all of these years?"

"You'll never win Shego!" Kim refused to accept defeat.

Suddenly, the entire room filled in smoke, and the laser shield dissipated, and Kim, Ron, and their rat Rufus were quickly evacuated leaving Shego, my dad, and I choking on the fumes.