The government of Canada won't check your passport upon departure, so this is not a problem.
Your airline will check your passport, but they just want you to hold a valid passport; they won't care what country it's from.
You will, of course, want to have your Canadian passport with you for your return to Canada.
She didn't pay the ticket, and more than one year later nothing has happened at all. No problems at the border and no letters etc. afterwards. Still not sure about entering Canada again, but apart from that everything's fine.
In general, your friend would probably be well advised paying the fine or get a traffic lawyer, if they feel it's not justified.
It seems pretty clear that it is though.
In your comments you mention that the employer / owner of the car "supports" her, but it seems to me that they just don't care. I guess if she leaves within the normal window for paying ...
Your passport serves as a proof of who you are. It is the leading document for the Russian and Belarussian authorities. Unless say you try to leave the country on a plane where you booked with first-middle-last they are never going to find out that somehow you have a birth certificate that has an extra middle name on it.
So as long as your passport is ...
I ended up using Alean Travel Company. We exchanged a couple of e-mails, payment was done via Western Union (USD 55) and the visa arrived two days before my planned entry by e-mail. They also offered me an airport pick-up for USD 15, which I felt was a reasonable price. All in all, everything went smooth and without a problem.
I have dual citizenship in the U.S. & Canada, and I live in the U.S. Since I have relatives on both sides of the border, I have flown and driven across the border more times than I can count, presenting my U.S. passport when entering the United States and my Canadian passport when I have entered Canada. I have never once run into a problem with this. ...
No, you cannot enter Kaliningrad by train, as the only operational railway checkpoint (Chernyshevskoye) is not listed as an approved port of entry.
RZD has no say in this, and so no authority to allow or prohibit it.
So you need to enter by air or bus/car
If you enter the USA on any status other that your F-1 student visa (such as your ESTA), there is a high chance that your SEVIS record and F-1 student status will be terminated. This will prevent you from being able to work on your OPT once it is approved.
The most simple next step is to wait until your OPT is approved and have your university or a trusted ...
E-visa isn't valid for trains, unfortunately. Official reason - no mobile scanners available, as the border check is done right on the train. Which doesn't make a lot of sense, as basically the same system was operational during the FIFA World Cup 2018.
There are plenty of bus options available. And even a unique option to cross the border on foot. :-D ...
As far as I know by searching for a similar trip (researched options in both directions, on land and air) it should be okay. If you go by plane and arrive at the airport already holding a Belarus Visa, you should be correctly registered as having left the Russian Federation and entered Belarus legally.
If you want to be extra sure you can fly Moscow - EU - ...