That 1GB could make a big difference if it means you can fit all the data into your RAM, and she has to move some to a paging file.
Also, on my old laptop I had a 7200RPM hard drive, which I found made many games' initial loading times much shorter (standard in laptops is 5200RPM, they run them slower than desktop ones to save power).
Of course there's other factors involved, like how much spyware and malware is boggin down her system
i suppose, oh well. i would only get a mac for the way they look. i would dual boot it with windows right away. wouldnt be able to stand not having windows handy