Supergirl appear in which episode of batwomen?

Supergirl does not appear in any episode of BatwomEn, as no such series exists.


But, she does appear in the Crisis crossover episode of BatwomAn, which aired on 9 December 2019, episode 9, Crisis On Infinite Earths, Part Two.

Episode 9 as part of the Crisis on Earth crossover

I believe she's only appeared in the Crisis on Infinite Earths episode.