Hamilton was being frustrated in the first half with Amie McGill missing a couple of good chances and Lori Garnder having an effort well saved.
But in the 37th minute, Hamilton made the breakthrough through Laura Gallen after lovely play from Gardner who provided the assist. Two minutes later, Hamilton doubled their lead with Gardner finding herself on the scoresheet after being picked out by MT McGuiness.
And then, before half-time, Gardner scored her second after a cross from McGuiness left her with work to do, and found the back of the net with a powerful finish.
Just after the hour mark, it was 4-0 after Amy Anderson’s through-ball found McGuiness who beat the keeper with a calm finish.
The defeat sees Queen’s Park move closer to relegation.