Bollocks, lets not turn her into a saint, she offered Nothing, Zilch, nowt..... till I called her out on it and then she said 30 mins, so yes she agreed but it was after she was "put on the spot" not before 
Actually I do offer discounts to people I let down, and wrote it here. Plenty people have taken me up on the fact that- when I cancelled on the day a lot last year- I offered 10 quid off another booking to apologise. You probably think you prompted me, which is fair enough, but when I tried to explain myself to OP himself last night he was a little... annoyed at me, so I didn't bother replying at the time. I guess that at least if it's all played out publicly (may as bloody well be, considering the current issues I have) you'll know I'm a girl of my word.
Believe it or not James, we're not all money grabbing cunts.