huh. Haven't seen that before...
Obviously a "stretchy."
Her grandparents and father, then a young child, managed to get out of Poland circa 1938-1939, just before the second world war, and emigrated to Mexico.
Lately she's been alleging her father was a Polish partisan based in the forests, fighting against the Germans and rescued by the Red Army.
That tale falls apart immediately, because the Poles were at the time about as anti-Semitic as the German socialists, and would've never tolerated a kid of Judaic descent among them. And the Red Army, upon entering Poland, would've either sent him to the gulag or killed him.
I suspect the cousin's original tale has more veracity.