Ringworm - Help!!

Ok so a family member made a horrible mistake. 

We took on two ringworm kittens and one of the crates they were in was not cleaned out as it was set to the side. One of my family members put a different kitten in that crate (she didn't have ringworm). If I lime sulfur dip her (I already did...) will that prevent her from getting ringworm if she has already been exposed to it but obviously no lesions have appeared as she was put in the crate today and lime sulfured today.

Please tell me if there is ANY way to prevent her from getting ringworm  

I would suggest going to your vet, getting medications, and all the professional stuff from the professionals.

Been to two vets, the cage she was in had two "ringworm kittens" in it. But now we are questioning if they even have ringworm. Two vets think they do but it's been two weeks yet and nothing is on the culture (I know it can take three weeks).

Vet recommended lime sulfur dipping her twice and she should be fine. I question if the others even have ringworm anyway, treating it as though it is but will be bringing them in to yet another vet to be tested for other things.