She probably was in shock. If you can get some Veterycin wound and skin care spray that would be good to use on the punctures to make sure they are clean. You can also flush them with sterile saline and use plain neosporin. Hopefully she has no internal injuries, but she may be bruised so may take a few days for her to really get back to normal.
Ditto, ditto, ditto on the hardware cloth rather than chicken wire. Chicken wire keeps chickens in but does NOT keep predators out. Your fox will very likely be back, so securing your birds should be a priority so you don't lose more.