Actually, it looked exactly that dimensional width, 90'. It was wider than 85' and that made a big difference to Clarkson who had played 3+ twenty minute OT periods five days before. They had no jump as they had not yet recovered.
When the Whittemore was built in the early 90's, the NHL may have had a range of acceptable limits out to 90'. But even that extra 2.5 feet on either side made a big difference. The difference between getting to the half boards for the breakout pass and not getting there in time.
My personal opinion is that 85' is fine for women despite their huge advancement in quality of play over the last decade. I think the men have outgrown that size.