Bogner Fire + Ice red women’s winter hooded jacket size 6

My mother purchased this from someone on Poshmark, but unfortunately the sizing seems to be missed marked in the jacket. It says it’s a size 8 however, my mother owns multiple Bogner jackets that are size 6, and she was trying to size up to an 8 for a larger jacket and this one doesn’t even come close to zipping on her, so it appears as though the tag in the jacket may be a mistake. I am attempting to re-posh this for her.  separately, the down in the jacket is very nice and fluffy. It has nice lines and shape and would be very cute on.