Quick update:

I left my rat on the balcony of my house over night (my roommate is terrified of my snake and anything that has to do with it ) and I just checked on it. Looks like it died on its own. I am not sure when. At this point can I present it? Or do I call it quits and buy a few more and freeze them myself. I feel strange giving him one that may have been dead a few hours now.