Did Kathy and gina schweber die in 2004?

Answer 1

Assuming you're referring to the 2012 movie "The Impossible," the answer is purposely left ambiguous, but the filmmakers imply that Kathy and Gina passed away in the tsunami. Karl does not find them, and they don't appear in the film. I could not find evidence that the Schweber family were directly based on real people -- they seem to have been created for the film.

Answer 2

"We stayed in touch with the man my husband travelled with while he looked for us. But it is hard because the man lost his two babies. That‘s what Maria said in an article.