Joshua, I sympathize with your predicament.
We all know that with any transaction not done face-to-face, there are additional aspects of risk involved. One is the "do not ship first" advice I often see touted in this forum, except I always wonder how that matter is resolved if both parties adhere to it. Since you had prior business with this person, I don't think you were accepting unreasonable risk. Maybe for those viewing, or any future trades, I might recommend eliminating as many assumptions as possible, to include not only being in agreement as to the animals being traded, and when they are going to be shipped, but how they are going to be shipped as well. Usually this is done to be sure that both receivers have faith in that particular shipper in their area (for instance, UPS has different guaranteed-delivery-by times depending on how rural you are), as well as being sure that both entities are using an overnight service, etc. I am not making excuses for Ms. Kohout, for even without any specific agreement, her means of shipment could not have been more careless and wrong. I also can't say that more communication about shipment would have prevented her from doing exactly what she did anyway, as there seems to be a lack of integrity combined with ignorance on her part. The multitide of errors on her part ... no next-day shipment, using the USPS, no air holes or temperature control accommodations, small box, etc, is negligence in every aspect. If she provided you with contact information, you are only providing what she gave you. Post away !