Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Two teenage girls and a woman who survived the deadly capsizing of a water ski boat in a frigid Utah lake spent hours swimming desperately for the shore and praying for rescue. Tiffany Stoker and Tylinn Tilley, both 13, were two of seven passengers hurled into Bear Lake, near the Utah-Idaho border, after the boat flipped over in a violent wind storm on Monday. They and Katheryn Capener, 42, were the only survivors after hypothermia sapped the strength of the others out for the pleasure cruise. All were wearing life jackets. Dr Lance Capener, Katheryn's husband, their two daughters Kelsey, 13 and Kiley, 7, as well as 13-year-old Sierra Hadley did not survive.Tylinn Tilley and Tiffany Stoker, both, 13, survived accident on MondayTiffany's father told how the girls, wearing life jackets, swam for hoursGirls prayed and massaged each other's cramped limbs to keep goingDr Lance Capener, his two daughters and one of their friends diedKatheryn Capener, 42, also survived disaster after rescue boat came 
 Question:_ and Lance Capener's teenage son had not gone boating with the family Monday because he was recovering from dental work.

Katheryn Capener