It would be more cost effective to find the exact same car with an auto and swap them. But since I doubt she wants to give it up you'll need most importantly an ECU, the tranny, brake pedal, radiator, differential. That's all I can think of right now.
It should be fairly easy for you to find a tranny because people are doing the oposite swap all the time.
Kevin (President TBEA)
"WAAAAAAARRRRRIORS, come out to plaaaaay."