Prosper attended Cairine Wilson Secondary School in Ottawa, Ontario and Capital Courts Academy.

During the 2022 season she averaged 25.1 points to lead the league in scoring while also recording 13.7 rebounds, 2.9 assists, 3.1 steals and 2.6 blocks and led the team to its first ever OSBA championship.

[2] Prosper represented Canada at the 2021 FIBA Under-16 Women's Americas Championship where she averaged 18.6 points, 10.6 rebounds, 3.0 assists, 3.2 steals and 1.2 blocks and won a silver medal.

[8] She represented Canada at the 2022 FIBA Under-17 Women's Basketball World Cup where she started in all seven games, and averaged 14.0 points, 9.6 rebounds, 2.4 assists, 4.6 steals and 3.0 blocks.

She stole the ball and scored on a layup with eight seconds remaining in the game to bring Canada within two points, however, they ran out of time, and lost to France 82–84.

[12] She made her senior national team debut for Canada at the 2023 FIBA Women's AmeriCup where she averaged seven points, 2.9 rebounds and 1.6 steals in 19.8 minutes per game and won a bronze medal.

[13] She represented Canada at the 2023 FIBA Under-19 Women's Basketball World Cup where she averaged 16.2 points, 5.8 rebounds, 2.3 assists, 1.8 steals and 1.8 blocks per game and won a bronze medal.