You might want to consider installing logmein free on your mom’s computer so you can remote into her computer to fix any other problems (so long as it has an internet connection) https://secure.logmein.com/products/free/
I use this from time to time to fix my mom and dad’s computers in the UK from California.
Oh, and another tip for a grandparent’s computer is to install Google Screensaver (which comes with picasa) and to set it up to show pictures from a shared Dropbox folder. Then so you can update the pictures shown on your mom’s screensaver just by adding photos to a dropbox folder