Look in the reptile section and look for Reptomin, HBH frog and tadpole bites, or Zoomed frog bites. You can also try cutting up the earth worms.

Do not feed any type of feeder fish - they are not nutritionally balanced and the risk of disease is so great combined with lack of nutrition makes it just entirely not worth it.

Again, does her skin look like it is inflating with air and is hard or does it wiggle and jiggle around like a water balloon?

You are going to have to start doing salt baths to help relieve the pressure in her body.
Use a separate container, not her tank. Tupperware works great for this.
Use the portion of 1 teaspoon of Epsom Salt to every gallon of water that is in your bath container. Temp match it to her tank. Let her sit in here for one hour once the salt is dissolved. Then return her to her tank and discard all the bath water. You want to do this once a day. It is usually for a few weeks until the bloating starts dissipating. If hard bloat, the bloat won't dissipate and you are just trying to keep your frog comfortable until it passes, but with soft bloat it will reduce the amount of bloating for a while, but soft bloat usually stays with your frog for life and will be a routine of salt baths every couple of months to keep them comfortable.