I've only caught a short replay but wasn't Wee Mac off side & attempting to play the ball but missed for the on-side Krishna to slot home? If so I think the linesman is fair to stop the play as Wee Mac was interferring in play.
Don't think that is the one being debated.
That camera angle is nowhere near in line. Look at the line mowed into the grass and the distance Krishna is to it compared to the defenders. She is in perfect position there and while it's very close, I believe she made the right decision.
Look at the distortion of the lens though, compare the line of the penalty area which is straight to the mowed line which is angled. Because Krishna is closer to the frame he's always going to appear further away from the line than players in the distance. The only way to actually figure it out is to get the lens width and the focal depth of the camera punch that information into a 3d application, like Blender, and overlay a 3d grid.
