The Challenge gave her skills that has helped to seize a host of other opportunities in the last three years.
She became head girl at her school, attended the 2018 Commonwealth Games as media and is now a volunteer for the Foundation on their PL Kicks project.
"I got involved in the Enterprise programme because I wanted to challenge myself," she says. "It was something new that I'd never explored before. To win was pretty amazing.
"The biggest thing I can take away is the idea of confidence. If you're confident you can be that person who goes as far as you want to go."
The PL Enterprise Challenge, run in partnership with Sport Relief, tasks young people with finding solutions to a business problem and helps raise self-esteem and aspirations.
And Lucy's progress since participating in the project now acts as an inspiration to other people at the Foundation and her old school.
"It's really pleasing to see someone who has taken part in the Enterprise programme following that initial engagement to the point where the skills that she has developed, the teamwork, the communication and leadership skills, she is now able to use these in a capacity as a volunteer," says Rob Martin, Man Utd Foundation employability and skills manager.
"Who knows what that will lead to in the future?"