Geez Clavus, I hope she turns out to be fine. I thought the word "necrotize" only ever meant something to do with spider/snake bites or wounds from other animated organisms, but not plant's! (Yes, I know they're animated, but not in the sense that most people think of!)
I've grown just about everything (including native N. American strains of plants from Montechello, which is Thomas Jefferson's home, for those of you who might not know), but not roses yet. I don't think I'll take them up...
You learn something new everyday!
Scary.
Ali