Hello, long time gone, returning to Mordheim at the request of my eldest progeny. I know this response is a little late to this thread, however the last Mordheim Rules Review I saved (back on 6/18/2009) updated Jump Up to read the following:
Page 123, Jump Up
Replace the last sentence with:
“The warrior may ignore knocked down results when rolling for injuries, unless he is knocked down because of a successful save from wearing a helmet or because he has the No Pain special rule.”
Since this was ruled after Marianna's appearance in Town Cryer 22, we do not allow her special consideration, but I do agree with others in this thread that it would be appropriate for her, and her alone, to do so.
Unfortunately, the Mordheim Rules Review doc I have isn't specifically dated/sourced within the doc, and I didn't note where I saved it from, however it is my folder of official rules, so I'm pretty sure I got it from the Specialist Games website when it was up.