I have a coursemate, who worries a lot, CAs, finals, assignments, flooding, you name it. But it's normal for one to worry about those things I mentioned, just not to her level, obsessed level I'd say.
I'd loved to see those people stressing over nothing, but if she's too jialat then it's time to help her and make her realise how good she is and where she stands and she has nothing to worry about