Have to agree with Slim...at this point it looks like there's not much you can do. And say if you were to actually come up with the $200 funds for her...who's to say that she won't come down with an illness (if she doesn't have one already: sometimes RIs can take a while to develop into noticeable symptoms - as an example) then that's going to be some costly vet bills which sound like you cannot afford right now. I would do the best for her that you can do at the moment, like giving her heat and security and hope for the best. Perhaps you and the owner can come to an agreement when he gets back. Good luck.