[3] In 2016, Cottrell was part of the fours team with Natasha Scott, Rebecca Van Asch and Carla Krizanic who won the gold medal at the 2016 World Outdoor Bowls Championship in Christchurch, in addition to a team gold.

[4] In 2020, she was selected for the 2020 World Outdoor Bowls Championship in Australia but the event was cancelled due to the COVID-19 pandemic.

[5] In 2023, she was selected as part of the team to represent Australia at the 2023 World Outdoor Bowls Championship.

One week later in the triples (partnering Lynsey Clarke and Dawn Hayman), the team won the group undefeated and reached the final against New Zealand, going on to win the gold medal.

[12][13] Cottrell has won the Hong Kong International Bowls Classic pairs title three times, twice with Julie Keegan (2009, 2010) and once with Carla Odgers (2013).