Weeks away from competing at her first Paralympic Games, swimmer Alexandra “Ali” Truwit is poised to win gold. It’s especially remarkable considering that just over a year ago, while on vacation in Turks and Caicos, she lost part of her leg.

After racing in the Copenhagen Marathon, Truwit, 24, took the trip to the Caribbean to celebrate her recent graduation from Yale University, where she received a B.S. degree in cognitive science and behavioral economics and spent five years on the swimming-and-diving team. One of her best friends from the team, Sophie Pilkinton, joined her on the vacation. A consulting job at McKinsey awaited Truwit in New York City in the fall. Until then, it was time to relax.