I would have a serious talk with her. If you call the HS, they may remove the dogs immediately or give her a chance to clean up. I would tell her you are giving her a choice, not just for the well being of the dogs but also for her own well being as she will be up on animal abuse charge. Clean it up, take proper care of all the animals, or you will be calling the HS.
Sometimes, ppl that rescue don't know when to stop and end up in hoarding situations and don't know how to stop the cycle.
~The strength of one's opinion should not exceed their knowledge on the matter~