Whatever the mutilation to her face/body, we know it was most likely able to be hidden cosmetically (if there was any). FB comments from WC indicate that she was going to sit with Mac's body and get to hold her hand one last time. To me this either indicates that she has a cast iron constitution, the damage was not that severe, or the mortitian was able to do some serious magic.
I read that statement opposite from what you indicated. WC said she would at least be able to hold her hand one more time. I took that to mean that she would not be able to look or hold the rest of her. JMO.