All of the Google suite of "office equivalent programs" are web based and can run on any platform.
You can absolutely share a file or folder with another person. You may not be able to do a "send to, desktop, create shortcut" for it but you can manually create a desktop shortcut "in the Mac way" by hand.
It actually makes a lot more sense for her to be using Google Drive as well, where the shared file would be resident, and constantly opening it from there rather than a desktop shortcut.