U.S. shuttle orbotors don't fly anymore and the Chinese don't have a working station in orbit yet. So that pretty well makes this film science fiction...seeing as some people were questioning that.
Of course. Regardless even in science fiction they often explain why inexplicable things are happening. And they didn't explain why the Chinese Space Station was losing orbit. Also - as I said up thread - she got very lucky pushing the right buttons to properly engage the emergency evacuation vehicle since she didn't read Chinese.