My Mom fell through ice once, rescuing her doggie who fell through a thin spot of ice on a pond. Luckily, her feet reached the bottom so she was able to carry the pup and break through ice to the shore. She was alone in the woods at the time. She jogged home to try to stay warm, took a hot shower, and had a couple of hot toddies. She and the pup were just fine after a while.
How to Survive Falling Through the Ice: An Illustrated Guide