I agree with the recommendation to test ride, but when you're 5'1", finding any bike to test ride other than a child's model has
always been difficult. Throw in a pandemic, supply-chain issues, and availability of bikes at a super low, and it becomes nearly impossible. I have bought bikes with and without test rides in the past, and I've had equal success each way. I do know my geometry needs (only too well), so that does help.
@Captain Slow, I have looked at a large variety of e-bikes online, and very few meet my criteria. Either they weigh more than 50 lbs (a non-starter for me) or are just too big and unwieldy for someone 5'1" and 100 lbs, which tends to go hand-in-hand with the first, or the price point is beyond what I am willing to spend. I also don't want a noisy motor (or one with drag when riding without it), so I rule out any bike with a Bosch. I stated up top the bike I was most interested in, the Kona Dew-E, and frankly, I haven't found a whole lot comparable to that particular model in specs, weight, quality, at that price point. The Specialized models (Como, Vado) are $1800 more than the Dew-E and don't seem to be worth that much more, in my mind. I'm not willing to compromise too much since I plan to keep this bike for a good long time, and I want to get it as close to right the first time rather than ending up with a boat anchor I'll have to turn around and sell later. The bikes I currently own are a 2004 Bike Friday Pocket Crusoe, a 2007 Trek Pilot 5.0 carbon roadie, and a 2011 Jamis Dakar MTB, if that is any indication how long I like to keep beloved bikes that fit me well.
I would rather wait for the 2023 models than end up with something I won't ride because it just isn't the right fit for me.
ETA: If anyone has any suggestions for me, I'd be happy to look into them. I did look at the Marin mentioned above, but it also appears to be out of stock, and I believe there was something else about it I didn't like when I checked online.