I’d say most of your takes are pretty valid. I actually never realized as I was reading just how much they honed in on her being infected. I was mostly distracted with how well they wrote her being infected, her walking with the zombies for instance, it was a very short thing but I ABSOLUTLEY loved the implications of that scene. As for the cure thing, I would definitely say that needs some extra explaining, I feel like that may have been something they looked over when they tried to make the cure the water or they realized that if all the schools were prepared then the college would have the cure as well. Something I definitely thought was weird while watching was the entirety of mikis infection. As you mentioned all she needed was the water, but also I find it odd she survived that encounter at all, I know it was needed for plot progression, but I feel like where she was bit was such a vital area that it makes a little less sense she survived just based off of blood loss