Sneddon made her senior Scotland debut aged 16 and amassed 130 appearances for the national team.

[2] In February 2011, Sneddon was called into Scotland's Cyprus Cup squad, listed as a Liverpool player.

[4] Sneddon made her debut for the FA WSL club in a friendly win over Hibernian.

[9] Sneddon made her senior debut for Scotland the day before her 17th birthday, in an 8–2 defeat to the United States in Columbus, Ohio.

[14] She ended her international career after Scotland failed to qualify for the 2015 FIFA Women's World Cup, publicly criticising the tactics of Anna Signeul and also speaking of the difficulties faced by players with various footballing commitments for club and country on top of a job outside the game.