I always thought Kahlo was a Trotskyite, but as you suggest she might have been a honey pot double agent--a very strange form of honey, to be sure, not one that even Swalwell would hit. She was just old enough to avoid Maoism and Castroism.
Plus she had heavier facial hair than my dear old dad.
Kahlo and Rivera hosted Trotsky while he was in exile in Mexico City. By the time of his murder Kahlo had become a loyal Stalinist, and of course Stalin is the one who wanted Trotsky killed. She was found innocent but who knows. Commies.