A/N: I might not continue it, but if people like it, I'll transfer the whole thing from my notebook.
And yes, i may like yaoi/slash, but this is NOT a yaoi/slash fanfiction. I'm somehow gonna add jello cups in this story, too. :3
Summary-Ferb's mother comes back to be closer to her son she's got a daughter! The 3 children strike up a quick friendship,until Ferb is kidnapped. Now,they must rescue him, because anything can happen with a wanna-be evil scientist and a mother with two personalities.
"I've got it, mom!", announced Candace Flynn loudly as she ran to answer the door.
Candace stared into a young woman's face when she swung the door open. The woman had long green hair, spiked at the tips as if somebody had tried to cut it shorter and had not done a very good job. She wore a black shirt with various white swirls and lines across it, ripped jeans, and a brown coat with fur at the sleeves and neck. A girl, appearing to be Phineas's age and approximately his height, stood next to her. Her long brown hair reached to the belt of her faded jeans, and she wore a matching coat and a white T-shirt.
"W-who are you?" Candace stuttered, surprised at the appearance of these two strangers. She stepped backward and considered whether to slam the door shut. "May I please speak to Lawrence Fletcher?" the woman said in a British accent. "S-Sure..." Candace trailed off, running inside and making a beeline for her father, who was talking to her mother, Linda Flynn. "Dad, there's a woman at the door and she wants to talk to you."Candace said pointing at the door. She followed her father back to the young woman. Lawrence glared at her. "Kathrine! What are YOU doing here, and who the bloody hell is that child?" Lawrence said, still glaring at her. Kathrine replied conversationally "This is my daughter, Sierra Fletcher. She also happens to be YOUR daughter. And i'm simply here to be closer to my son.". Lawrence narrowed his eyes and asked,"MY daughter? And you better have good reasons for wanting to be closer to your son than just having a daughter that's mine somehow...".
Kathrine said, "I was pregnant when I left you both, althought I did not know it at the time. So she IS your daughter. I simply wish for her to meet her brother and his stepbrother and family.". "Very well, but only if Linda and the children agree, Kathrine.". Kathrine and Veronica followed him in as he made his way swiftly to his wife. "Linda, this is my ex-wife, Kathrine, and....our daughter. She was pregnant when she left Ferb and I." said Lawrence.