Isabella recaps the events 'that was close! but how did doofenshmirtz know you were close enough to us that he could use you as hostages?'

Rachel 'i think little Abigail can answer that'.

Abigail apologizes 'mom, dad I'm sorry '

Isabella asks 'what for?'

Abigail explains what happened 'when Rachel and i met the guy in the middle of the street i didn't know he was an enemy of yours, so i thought i could trust him enough to tell him our last name. '

Isabella explains in a calm voice 'it's ok, I'm not mad in fact, i too made a similar mistake when i was your age. Your father did too.'

rachel inquires, what did you do, mom?'

Isabella confesses, 'remember that summer 20 years ago i told you about? well one of those days, i was reporting for my fireside girl Gazette, and i posted a story about this hero in a bird themed super suit unaware that it was phineas, unintentionally putting him in the crosshairs of a villain known as kha kha peu peu. It's the biggest regret of my life.'

Abigail asks phineas, 'what did you do dad?'

phineas confesses 'i helped the more incompetent version of doof from our dimension build a portal into an evil dimension but i didn't know he was evil. '

Isabella cheers everyone up 'the point is as long as we have our friends and family to cover up our mistakes we're fine' so everything worked out, Abigail and Rachel we saved and phineas didn't have to give doof the key to taking over his world the end.