Thanks for the input, everyone. I told her it was probably unsafe, so she has not been riding it. Fortunately she has a 2011 Raleigh Clubman that she adores more than this heavy old beast. I just wanted to get some opinions before I strip it down and scrap the frame. I don't think it will ever break, but there is no sense in taking chances.
By the way, the fork is straight and does not appear to have ever been crashed. Also, I put callipers on the tube and it measures out to be round and not deformed.
Thanks,
Anthony