What the worming med does is to sedate the worms in the intestines, then they die and are usually absorbed into the intestines, but they may be clogging her now. You did the right thing by giving her sugar water and electrolytes in the beginning. Keep that up. It's keeping her from dying of shock.
Her crop not emptying points to possible obstruction of dead worms in the intestinal tract rather than a stuck egg. I would give her a molasses flush. This is gentle and should help.
Mix one teaspoon molasses in one-cup warm water. Give it as her sole water until she drinks it all or better, tube it into her crop. Are you prepared to tube a chicken? The solution could also be syringed into her isf she can't drink on her own. This is how to do it without aspirating her.
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