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: A woman who fell to her death off a cruise ship may have been trying to make a dramatic gesture to 'alarm and test' her fiance, an inquest into the couple's death has heard. Kristen Schroder, 27, slipped from a fifth-level balcony on the Carnival Spirit cruise ship off the coast of NSW in May 2013 after climbing over the hand rail. Her 30-year-old partner, Paul Rossington, jumped nearly 20 metres into the Tasman Sea moments after in a bid to rescue her. The couple's bodies were never found and an inquest into the newly engaged couple's deaths was told there was little chance either survived for more than a few hours in the water.Kristen Schroder fell overboard off Carnival Spirit cruise ship in May 2013Paul Rossington dived in after his partner but both were never seen againInquest heard the holiday was 'make or break' for the 'volatile' coupleCCTV shows Ms Schroder clinging to rail for four seconds before fallingCoroner recommended Mr Rossington for a bravery award at inquest 
 Question:'Why _ stepped over the railing of the cabin is not known.

Kristen Schroder