Hmm, I tried "open in new tab" first, and got a "Firefox can't find the server at www.margaretlauterbach.com." message. Tried just clicking on the link and got the same message. Put her name in a google search, and found the same website, so I clicked on it there. I STILL got the same message.
No idea why it would work from your computer, and not from mine! No problem opening any other pages.