Thank you. Everything appears okay. There wasn't a definite "yes", but there wasn't a refusal or a request for more info. My wife also received a green paper that has information about immigration. It's in Russian.
There were a few dozen people waiting by the Embassy in the morning. Mostly older in age. A mask is required for going in and this wasn't something we considered. While my wife was waiting outside, I ran to find a store that sold masks — but didn't have any luck. But my luck was found again when I entered a cafe and asked to buy a mask. They didn't have one for sale, but gave me one for free instead. I then ran back, in the 0-1 degree C temperature, to give my wife the mask in time. I think there were a few other people doing these quick runs, but I noticed they continued down other streets in search of a market.
Our route was Moscow -> Istanbul -> Barcelona -> Berlin -> Warsaw. All were done via flights except Berlin to Warsaw, which was by a 6-hour train. I spoke with someone else whose mother got a Schengen visa for Italy. They met there and flew to Warsaw. No passport was checked once they were in the Schengen zone. I knew this was the case, but I took the train to be as safe as possible.
We're enjoying Poland the most out of all the European countries we've been to this trip. Spain and Germany were underwhelming; expensive and the service was lacking. Maybe they're more enjoyable during the summer.
Anyway, now we wait.