Well how is she doing? Since gapeworm could be in your environment, I would probably get that stool sample looked at from your vet if possible, because you will want to treat all of your birds. Cleaning up droppings may be a good thing to do, too. It would be best to give this orally...
None of us pretend to know more than you do. I appreciate your advice, and I think it adds to the forum, as well as giving us all options. I'm just posting what I have read, and that is what this is about, giving our opinions, and having a discussion. Then the person can make up their mind...
I can't say what works best on gapeworm since I have never treated it, but the literature supports fenbendazole (SafeGuard, Panacur.) I would use it just because it is readily available. Kerosene has been an old timey remedy that worked on many insects and worm infestations, including lice...
SafeGuard Liquid Goat Wormer or Equine Paste will treat gapeworms. It is very safe to use, much safer and easier to find than levamisole, which as previously said will treat it. The dosage is 1 ml orally, given for 3 consecutive days. Wait 10 days and repeat. Gapeworms cannot be seen unless...