[9] In 2017, Boutier captured two wins on the Symetra Tour (Self Regional Healthcare Foundation Classic and Sioux Falls GreatLIFE Challenge) as well as eight top-10 finishes.

In 2018, she played in 25 events on the LPGA Tour and made 16 cuts, earning $319,577 and finishing 61st on the money list.

[10] In February 2019, Boutier enjoyed her first LPGA Tour win at the ISPS Handa Vic Open.

[11] In the final round, Boutier made a critical birdie on the 15th hole and showed "nerves of steel" to claim a two-shot lead and victory in the $1.5 million tournament.

[12] In doing so, she ended a long drought for French players on the LPGA Tour, becoming the first female pro from France to win since Patricia Meunier-Lebouc in 2003.

[14] In July 2023, Boutier won the Evian Championship, the only major tournament hosted in her home country of France.

[16] The following week she won the Women's Scottish Open by two strokes over Kim Hyo-joo, with three rounds in the 60s, and a final 70, for a 273 (-15) score.