Sunday's game was already a momentous occasion for Palace's number 17, as she stepped onto the field for the 100th time in Palace colours.
The Eagles needed a win to keep their automatic promotion hopes alive, and of course it was Blanchard that helped provide it.
She pounced on Abbie Larkin's deflected pass, took one touch, and guided the ball into the bottom corner to make it 1-0.
It was her fifth league goal of the campaign, and it may well prove to be the most important one yet this season.