Went to Rei and tried 3 different sizes of Randonee.
Standover height is okay for 52, 55, 57.
Legs can be comfortable on sizes for 52, 55, 57 with seat post adjustment.

Now the tough part comes - bar height and reach. I am overweight and like an upright position. All of the adjustable stems were at their highest point.

57 - Reach almost comfortable to top of bars. Reach entirely too long to hoods. Bars need raising up.
55 - Reach still too long. If hoods could be moved back to where top of bars were, would be close to fit.
52 - Reach seems better, but how to raise the bars enough to make up for seat being higher.

57 - I get the feeling just to big
55 - Not sure the bars could be brought back towards the seat enough while remaining at the height needed. Meaning, don't think a stem could be short enough and still reach as high as the original stem.
52 - To get seat height correct, bars would need to be raised a couple of inches at a minimum. Reach was closest to being comfortable. I wonder if a longer adjustable stem would do the trick.

Which size would you choose to make adjustments to?
Or, would you seek out a different bike with different geometry altogether. Randonee only touring bike that I can find to test.

Follow the bell curve - probably the 55. Remember that as you develop your riding skills and ability, and get into shape, you will most likely want to stretch out more as well as ride in a position that is more efficient, which is leaned over to some extent. You don't want to have too small a frame at that point.

Sounds like you haven't done even a simple bike fit. Your LBS could do a quick one and give you a better range. The difference between a 52cm and a 57cm is enormous.

If you can't find an LBS to help, there are some online. https://www.ebikewarehouse.com/Tiemey...Calculator.htm

I wouldn't necessarily take these as gospel, but they'd give you some information to start with.

Just to give you an idea, as a 5'6" woman, I'd probably take a 52cm Randonee. My partner is 6'2" and might well find the 57cm just a hair on the small side for reach. Both of us are long torso short leg types, him moreso than me. My dad is 6' even, and would ride the 55cm and ***** the whole time that the reach is too long. He's a long leg short torso type *g*.

Fit on a bike is about proportion, so it takes into account how long your torso is, how long your legs are, how long your arms are... Different bodies really do vary. It's also got a lot to do with how your particular body works. Like most women, I'm extremely flexible... so I can stretch out and manage a bike with much more reach than a man of my size would. And it *hurts* to do that, so I shouldn't. There are lots of other similar bits of weird that can affect fit.

REI does have a bike fitting service. Instead of asking strangers on the internet, I'd ask your shop people to measure you and help you figure it out. If they're willing to let you try longer test rides, that will also help. 5 miles is a lot more informative than a turn round the parking lot.