Phew! Sounds like you lucked out.

It's the worst feeling ever! I've tried it too, especially when I didn't know that Duttaphrynus melanostictus' are better jumpers than Bufo bufos - my first little new guys jumped kamikaze straight out of my hand, from ca. 1.40 cms heights right down on the wooden floor. Normally I carry them in my palm, if I carry them, so my thumb and index is just in front of their shoulders and keep my other hand in front of them and generally move slowly and calmy, so it's both not too easy for them to jump and to prevent any startling by quick movements. But this small guy jumped right up into the air and landed stomach first x.s

Thank God nothing happened!

I think all you can do is wait it out and see how she's doing. Any alarming signs, take her to the vet.