Thank you for using the answers forums. We are sorry to hear that you are having issues connecting your daughters computer. As long as the Slingbox has been set up on the home location, you can connect to any computer as long as the operating system and browser are supported. You can view on an unlimited amount of computers, however, only 1 person will be able to connect at the same time. You can also check out this article for more help.
Some Internet security and personal firewall software may interfere with your Slingbox setup or SlingPlayer
The Sling Moderation Team