Glad to hear she is alright.
Some of the ramps at cumberland have a swath of algae growing right where the water meets the pavement, and it is very slippery. My truck tires actually spun a little pulling the boat yesterday .
This slime reminds me of when we were kids we would go to the creeks looking for the big flat rocks that had this stuff and take off running and slide for a long way.
might be the wife slipped on this stuff without knowing it was present.

Keep the boat, she could have fallen at home or the grocery store or the gas station.
Thankfully she is ok