Well, that is probably why she is bloated and can also explain the lack of appetite! Darn, you had her treated and she was doing so well. 
I understand you being upset. I hate to think of you having to replace the soil in your huge viv but there is the possibility of her becoming re-infected. I don't have my parasite book with me but do recall that one of the meds is for worms and the other is for protozoan type parasites. If she only has one then she only needs to be treated for that and therefor would only need one medication. There's really no need to stress her further with medications that she doesn't need.
What I would do is strip the soil from her viv and do a thorough cleaning. I know this is a real pain but would insure that she won't be re-infected. Keep her in a smaller home temporarily so that you can easily clean up the feces daily. Make sure you change the water daily as well. When I am doing this type of treatment I go for paper towels and a large fish tank with synthetic plants and branches so that they can also be sterilized. When she gets a clean bill of health from your vet then you can move her back to the large enclosure.
If you don't want to start with new substrate you can bake it to sterilize it and kill any parasites. This would, of course, kill off any red wigglers and anything else you have put in the soil. It also can be a bit smelly. I don't recall the temps and time but you could probably find that info on the Herp Health Discussion forum or the Cage & Habitat Design forum.
Anyway, as upsetting as it is, at least you know what is wrong now and can do something about it. If it had not been detected you could have lost her and that would be WAY more upsetting!
So, hang in there. I’m sure she’ll be just fine under your great care. If you go through this and she becomes infected again I would turn my suspicions to the feeders she is eating. Some nightcrawlers are fed on horse manure and that can be a source of worms.
Good luck,
Marcia
www.froggieb.com