[3] In September 2015, Newry City won the Northern Ireland Women's Premier League, when Mackin scored a dramatic last-minute winner over Mid-Ulster Ladies.

[5] In 2011 Mackin was called up to represent Northern Ireland at under-15 schoolgirl level while she attended St Paul's High School, Bessbrook.

[8] In February 2015 Mackin scored a hat-trick for the Northern Ireland women's national under-19 football team in a 9–1 win over Estonia at Solitude.

[9] Mackin made her senior debut for Northern Ireland in October 2013, during the 2015 FIFA Women's World Cup qualification campaign.

[11] From a prominent Gaelic Athletic Association (GAA) family, Mackin's father Michael served as a coach and chairman of Shane O'Neill's GAC where Aimee and her five siblings all played.