I'm going to wait until after @demonspade64 is done revising to post. To answer their question I personally think that if Luz got close enough to see the barbs, she would be able to realize that something was up with the flower.
Ugh I can't think of anything to get the flower out
Will do, just got off work and am about to pass out again. Be up with a response in a few minutes before I pass out again.