Replying to Brake width, +k

so i picked up some bindings and my girl did the same, they are 100 mm brakes....my skis have a waist width of 84 and hers have a width of 81. is it a bad thing to have these wider brakes? it looks like they come in a little when you clamp into the binding but wanted to make sure there isn't any adverse effect on our skiing. i only ask because the bindings came in  either an 80mm or 100mm so we both with the 100 to be on the safe side, cheers.