About SS and the pond. It could be she was suffering from hypothermia. At the end stages it makes the victim feel hot so they either remove their clothes or seek somewhere to 'cool off'.
https://io9.gizmodo.com/why-freezing-to-death-makes-you-want-to-get-naked-1688151366
"Victims of exposure and hypothermia never have a good time of it, but sometimes they engage in a behavior that's both understandable and horrifying. It's called "terminal burrowing behavior," and involves losing their minds, running away, and crawling into a hole to die."