Doctors have a reputation for being financial bumblers and rubes, and this woman appears to be no exception.  It's not uncommon for them to screw things up to the point where they have to keep working into their 70s.

In this case, it's hard to tell where all the money went over her career, but someone else has already pointed this out.  Bankrolling a feckless spouse or two and their get-rich-quick schemes is a common pitfall, as are expensive vacations, trips to Holt's, and cars.  The favored vehicle among most doctors I know is a late-model European SUV, perhaps a Beemer or an Audi.   And of course, there's always the indulged kids.  (Well, I suppose they have to 'find themselves', don't they, even if they're 35.)  Some doctors lose their money through stupid investments (derivatives, anyone?) but for some reason those ones are almost exclusively male.

This woman needed advice years ago.   She's probably not going to learn to spend less.  She'll just have to work longer.