There are no antibiotics or "medicines" in there then - it's basically a vitamin and mineral supplement. To administer it you would have to get it on the crickets you are feeding to her.

As long as she maintains a good appetite I think this will heal on its own. To treat it topically would require a multispectrum antibiotic.

If you must treat it topically here is some advice from Jan over on Caudata.org which is relevant to your frog. Flush the wound with spring water or preferably sterile amphibian ringers (non-sterile would do), dab a little 1.5% hydrogen peroxide on the wound using a Q-tip (1:1 dilution of commercially available hydrogen peroxide 3% using spring water = 1.5%) and apply a thin layer of Neosporin (without benzocaine or other pain-killers which can be lethal) on the wound.