At the 2009 Canadian Junior Curling Championships, she threw fourth rocks for skip Vanessa Maloney and finished with a 6–6 record.

[3] At the 2010 Canadian Junior Curling Championships, she skipped the rink of Kim Curtin, Jennifer Gates and Kaitlynd Burns to a 9–3 round robin record.

[4] At the 2011 Canadian Junior Curling Championships, Lilly's team of Gates, Courtney Chenier and Curtin went 6–6 and missed the playoffs.

[11] In 2014, Lilly joined the World Curling Tour for her first season with new teammates Sarah Potts, Oye-Sem Won Briand and Tirzah Keffer.

[12] In 2015, Lilly joined the Krista McCarville rink as third, and won a silver medal at the 2016 Scotties Tournament of Hearts for Northern Ontario.

At the 2019 Scotties Tournament of Hearts, the rink had a 8–3 record, putting her team in fourth place in the round robin, earning them a spot in the playoffs.

As the 2020 provincial champions, Lilly, with McCarville's team, was given an automatic invitation to represent Northern Ontario at the 2021 Scotties Tournament of Hearts in Calgary.

The 2022 Northern Ontario Scotties Tournament of Hearts was cancelled due to the pandemic and Team McCarville were selected to represent their province at the national women's championship.

In December, Team McCarville competed in the Curl Mesabi Classic where they went undefeated until the final, losing 5–3 to the United States' Tabitha Peterson.

They defeated Jackie McCormick to advance to the final where they topped Krysta Burns 9–4, securing their spot in the 2023 Scotties Tournament of Hearts in Kamloops, British Columbia.

[33] For the 2023–24 season, Team McCarville added New Brunswick native Andrea Kelly as their new third, with Lilly, Sippala and Potts rotating on the front-end.

In the new year, the team again won the 2024 Northern Ontario Scotties Tournament of Hearts with ease, going undefeated to claim their fourth straight title at the event.