Rangers' resources, finances and expectations had them as heavy favourites heading into their fourth Scottish Cup final, but Hearts hardly appeared bothered by that in the opening stages.
The underdogs were not there simply to take part - they were there to compete. Or to at least ensure Rangers did not romp to the victory that many expected.
Eva Olid's defence were defiant and it didn't take long to realise something special would be required to spoil their strong start. Cue McLauchlan.
The Scotland right-back was gifted a few yards in what would be deemed a safe range from goal. However she unleashed an unbelievable strike, worthy to win any game never mind her club's first Scottish Cup.
Those who follow this team know that after they score first, a few more tend to follow.
That wasn't to be the case at a dreich national stadium, but Potter's players certainly upped their play.
Kirsty Howat, who will hope to make her international debut here on Friday in Scotland's Euro 2025 qualifier against Israel, tested Charlotte Parker-Smith.
Substitutes Rio Hardy and Rachel Rowe were also denied superbly by the league's goalkeeper of the year.
She was doing her bit to keep the nerves jangling in the Rangers ranks, but her team-mates couldn't match her heroics up the other end.
Carly Girasoli forced an otherwise quiet Victoria Esson into a fingertip save, and there was a feeling in the air that one had to be buried.
Alas it wasn't, but Arnot's composed shot was. Her experience carried her to the edge of the area to shoot her side to Scottish Cup success.
