the year on that container is 2015, or am I not seeing well enough? (granted I have to use the stupid Edge browser as I can't see images in the Farms using Firefox)
Right? Not only is the bruise towards the outer side of her forearm, the bruise isn't following a vein (when you get bruises from IVs, it bleeds following the vein that was punctured. Her bruise is perpendicular to any vein in that area).
From the position and orientation of the bruise, I suspect it was the compression point to get the veins to pop (sorry I don't know the name of the thing in English), and as many suggested, the blood was drawn from a vein on her hand.