Well,
http://192.168.1.1/ doesn't work for her, but
http://192.168.0.1/ does. She uses Comcast for her ISP, and that second link takes her to Comcast Home Networking. Only problem is, we can't find out the information for her to log in with.
I told her it's out of our hands now, and she'll probably have to call her ISP regarding the issue.