The first British female to win the ADCC Trials in the black belt division, she is a multiple time World Medalist and the 2019 European Champion in both Gi and No-Gi.

[12] At the age of 21 she discovered Brazilian jiu-jitsu and after moving to Bristol in 2008, started training under Checkmat's Chico Mendes.

[15] As a brown belt Cook won gold at the ADCC European Trials, the first British women to do so at black belt level;[14] then won the 2017 European Open (Gi and No-Gi) followed by a double silver medal at the 2017 World Championship in both her weight division and in absolute.

In August, debuting at black belt at Polaris Pro Grappling 5, in a Gi Match at 64 kg, she defeated Nottingham's Vanessa English by judges decision.

[12] At Polaris 7 she lost a No-Gi match to Finland's world champion Venla Luukkonen after a split judges decision.