Congratulations, Kathy! Whatever you do, have fun.
I've had the great fortune of traveling all over the world in my 20's and 30's (I'm 42 now so take my retirement advice with a grain of salt). I'm sure you're wanting to be conservative financially, and you have to, but don't feel like you have to immediately plant roots somewhere and do the traditional retirement thing. Don't be too tied to your stuff. I'd urge you to do some slow traveling and get to know places you've never experienced, especially outside of the US. If your energy and health are up to it, you can do this very economically. If you are a backpacker, I'd bet that you would enjoy a cheap room, apartment, or bunk on a sailboat in paradise for a few weeks or months. And don't worry about healthcare unless you really need to worry. Medical and dental care outside the states is generally very good and much cheaper.
And I'm not suggesting anything unprecedented: I spent a great day walking some super steep hills outside of a Mexican town, walking to the point of exhaustion, with an 83 year old woman. She had been traveling non-stop for 3+ years after her husband passed away. She was Swiss and probably had billy goat lungs and a favorable exchange rate, but I think she was one of the wisest, happiest, and most interesting people I've ever met. My point is that there are other women out there happily doing what they want on their own. Just because you might not know anyone living that life shouldn't deter you if what I'm describing is at all interesting.
Whatever you decide will be the right thing. And yeah, get out of the area you are in...great people there...but go do some new stuff.