That’s a rough-looking 49, Nora. I guess she’s had an aging ten years (which I just discovered was the intended time frame). I mean, she was supposedly blasted with a bunch of radiation. Plus, Australia is a sunny place.
Based on the story line, I was guessing the character was supposed to be somewhere in her early-50s, but really looked more like an earthy, fit late-50s who was aging well.