The Macbook is only 0.7" smaller than the Acer and they are both the same resolution. She could setup Windows with Bootcamp and set that as the default OS so that she only ever has to see OS X when she needs it. From what I can see the acer is higher specd than the Macbook on three things: Dedicated graphics card, 3GB of RAM and 250GB hard drive. The dedicated graphics card will only really be needed if she's wanting to do some gaming. The RAM and hard drive could be a little bit of a problem, although if you go here and then go onto the Macbook you can could go onto the second Macbook and upgrade the hard drive to 250GB which will then cost $1289. This is $190 more than the Acer, but you could claim the free iPod and sell that which should bring the difference down by quite a bit.
What is it about the Acer that makes you want that more than the Macbook? Is it the graphics card? Hard drive? RAM? The fact that it's not a mac? Is it so you can brag about how you're running OS X on non mac hardware?
What is it about the Acer that makes you want that more than the Macbook? Is it the graphics card? Hard drive? RAM? The fact that it's not a mac? Is it so you can brag about how you're running OS X on non mac hardware?