I read her wikipedia page last night. Crazy stuff. Looks like Fall Guy was the height of her acting career. After that, just a few bit parts and 40 screenplays she never sold. It's a pretty solid read.
For FIFTY TWO, she still looks like she's held together pretty well, though with some assistance, methinks.
I also watched a very recent interview with Lee Majors last night, who is now SEVENTY TWO!! WOAH! For a frickin' old man, he held together REALLY well, but his speech is SLIGHLY slow. He still has pretty much the exact same sense of humor and wit, and seems really grateful for the time he spent on screen.