Does she need a co-driver? Yes, yes she does! P.S. I'm all legal-like, got my shots and everything... P.P.S. I've watched a couple of her videos in the past... sharp gal, I'm sure she'll work things out.
Ok self, be mature here. That doesn't answer whether she can go to the US or not. Being in The Big Smoke she has many choices. Almost everyone who runs across Canada has a terminal in Southern Ontario. I know Bison, Challenger, Day Ross, TransX and others have cross Canada runs, decent equipment and drivers that seem happy. If she can go stateside she should have her pick of jobs. The number of small to medium size carriers around there is pretty big. If you had more specific info on what she's looking for I'm sure someone in the Cdn Forum would have a suggestion for a good company.
Speaking of Day Ross, I was at their Brampton terminal a while back. On the way out they have a nice big 'reminder' sign that says IS YOUR GPS TURNED ON lol
She needs to get Canadian CDL, starting from zero. I am sure Iwona will have no problem going thru the exam, but no way to drive truck in USA (and Canada) with European CDL. She needs residency as well, if she is just visitor - no CDL.