Campbell played rugby for Scotland U18s 7s, with the team securing sixth place in the Rugby Europe 2019 Championship. She has also played touch rugby at a national level in the Scotland mixed open. In 2019, she was the youngest player to be selected for the adult's mixed team at 17 years old. She travelled with them to play in the World Cup finals in Malaysia, where the team were bronze medalists. Two years prior to that, she played for the Scottish Under 18s touch rugby team, competing in the Junior Touch Rugby European Championships in Dublin. She was called up for Scotland's
2021 Women's Six Nations Squad. Gordon Lyon, who has helped coach her at Edinburgh University, commented on her call-up,
“Shona is one of the most exciting players we have seen in Scotland for a while... She is a very balanced runner and can find space like no other - I reckon she could easily sidestep a player in a telephone box!" == Personal life ==