Me trying to explain leftism to an American: ok so imagine slop
You could try a couple movies like Sorry to Bother You, Battle of Algiers, or something like RRR. They're fun and show a different way to do politics that isn't the ballot. Show her Blowback if she likes history (season 3 + watching Parasite and try to incept her into realizing Parasite is about the Korean war and it supports the communists?). I'm a Virgo is a pretty good show that blasts communist propaganda in the viewer's face in a very easily digestible way, it spells out some basic points that can get you started to introduce big ideas, kinda like a treat version of reading Lenin.