Think that, hopefully, she may have been very lucky. When cats jump like that - and sometimes miss - because every muscle, sinew etc., in the body is so tense for the leap, it's quite easy to sustain a quite serious injury. A Vet once explained that to me when I had a lovely little cat many years ago and he went to jump (almost a vertical takeoff) onto the cooker hob as I stood there. The cooker hob was on and he must have panicked and slipped. He landed on his feet from not a great height but one leg was clearly painful. I took him to the Vet and he had shattered one leg in 3 places. It needed surgery and a couple of plates and no one was more surprised than me.
As others have said, if she's behaving normally in the morning, and seems to be her usual self, and is eating and drinking, she's probably fine. If you have any doubts or she seems to be struggling in any way, I'd have her examined by a Vet just in case. Hope the morning will reveal a totally fit cat!