Pro tip, put water in your baking dish to keep anything that drips or leaks out of the abomination you created from turning to charcoal in the bottom

The only type of colonising going on in my bath are mildew and bacteria. Is this what the soap will do or should I just maintain my chemical warfare?

Sounds like she kept her head and did well to keep herself safe. Glad to hear she made it out. Hopefully this experience doesn't keep her from continuing hiking