Hi Chris,
Thanks for the detailed info! I'm glad to see you've already found the calorie calculator. Try those numbers at first and alter them as needed.
Depending on what sort of diet your girlfriend is currently eating, she could see great results from manipulating the diet alone. Of course, exercise is 50% of the battle, so that should definitely not be ignored. But I'll leave the excersise part up to some of the many better-qualified folks around here.
I would suggest getting her to read some of Berardi's articles about when and what to eat for leanness (e.g., whole veggies and fruit with every meal; grain carbs and sugar only after workouts).
Here's a good place to start:
Dietary Displacement 1
Dietary Displacement 2
Then you can move on to these:
Nutrient timing 1
Nutrient timing 2
Then you can start organizing some meal plans using the calculator and macros you got from my web site, using
some of my recipes, or similar ones of your own.
I hope this helps!