I don't know if this mac is PPC-based or if it's Core Duo/Core 2 Duo/Quad core-based, but if this may help, there is a program (like Virtual PC for windows) that lets you run windows on your mac, this one is for PPC-based macs.
Here is the link (if it might help)
Virtual PC for mac (PPC-based) If she has an Intel mac then she might be able to run the bootcamp assistant so she can have Windows on her mac, side by side (on the HDD) but she'll have to reboot each time she wants to switch OS's.