Smith attended Penicuik High School;[1] she began her football career as youth player at Heart of Midlothian, playing an increasingly important role for the Edinburgh club as they gained promotion by winning the SWPL2 title in 2019[2][3] and established themselves in the top tier.
In Smith's first season in Glasgow, Celtic won their first-ever SWPL championship,[6] although she fell out of favour in her usual position in central midfield and ended the campaign mostly on the bench, and competition for places in the role increased that summer with the signings of Shannon McGregor and the Danish twins Mathilde and Signe Carstens.
However, in the early months of the following season Smith was used often as a right wing-back in domestic matches[7] and as a right-sided midfielder within a more defensive shape for fixtures in the UEFA Women's Champions League group stage (for which the team qualified for the first time), albeit her situation was complicated by the arrival of right-back Emma Lawton.
[8] After being involved at youth levels (mainly with the under-17s),[1] Smith made her full international debut for Scotland as a substitute in a UEFA Women's Nations League fixture against the Netherlands in October 2023.
[9] She joined the squad for the 2024 Pinatar Cup when Christy Grimshaw withdrew due to injury,[10] but did not not appear in the tournament.