Gotcha this time <| sep |> its pretty simple if you find the right cow first and are really quiet <| sep |> The title of the Supergirl episode after the crossover and after the winter break is Supergirl Lives . So the popular theory now is that when Supergirl gets back , a few weeks would have passed already since the timeline on the show tends to mirror the real world , i . e . the next episode of Supergirl is a Thanksgiving episode , she ' s probably not going to be dropped back on Thanksgiving when the show resumes again in January and Supergirl has been missing and presumed dead . That would actually be a very interesting concept because it would allow the other characters to progress offscreen , meaning Guardian and MonEl could be a lot more experienced when they have to pick up the slack in Supergirl ' s absence . You can also have other things , like Cadmus being successful in turning popular opinion against aliens because Supergirl is no longer around and the only aliens people hear about are bad ones .