I think these sort of platitudes, along with Einstein/me cousin/I failed my A-levels and still did very well are totally unhelpful at this moment. Just because it worked out for some people doesn't mean it will for them, and there's a long wait to see if it does.
They may be helpful in a few months' time when she feels more settled and has started uni.
Let her lick her wounds. Let her know you love her for who she is, and be upset with her without making it about you. Pretending that exam results don't matter is unfair because she knows they do. Maybe if she can get her papers back and a teacher go through them with her, if a teacher will do that, will give her some closure.
Then plan something for next week she can look forward to. Day out, weekend away etc. And have time to talk. Talk about what she is doing, her options, if that's where she wants to go, or avoid it if she isn't there yet.
Just let her know that you are there for her, and will do what is in your power to help. Anything that lots of people say, thinking they're comforting, is very rarely a comfort.