Thanks for the info! It seems OS X does have some degree of Nepali support; I was able to install a Nepali keyboard when installing Yosemite and can now toggle

Thanks for the info! It seems OS X does have some degree of Nepali support; I was able to install a Nepali keyboard when installing Yosemite and can now toggle between keyboards easily enough. It seems to print Nepali characters fine (although I honestly have no idea). I'm thinking I'll install Windows on another partition so that the option is available, in case some software is Windows only. Dual booting on a Macbook is reasonably straight-forward, although swapping OS is likely to be confusing for a newbie. So I probably won't mention Windows being installed unless they contact me saying they're stuck on something.