Anyway...even without the penalty deduction for the paper, flakey still fails the course. I'm just going to tell ombudsmen this. But it's just so annoying when you try to be nice to someone only to have them use it against you. I welcome other stories that come back to bit you.
Do that, and include in the message (cc'd to the ombudsman) that Flakey - like every student - has the right to appeal her grade and the instructions for doing so are here (link).
Then give a heads up to the next up in line (your chair or dean?) that Flakey will almost certainly be contacting them to do just that.
At least get her out of your
hair for a little while.