Sharon is about as generous and sympathetic a person as you're going to find on the board. If you've lost her support, that speaks volumes. Sounds to me like you did take advantage of her good will. The best thing would have been to just offer up a public apology. Instead of trying to make counter arguments as to if you actually said that you would take the book “IF” whatever scenario took place. I personally don’t believe your version of the way things went down and I’m guessing anyone that’s dealt with Sharon does not believe it either.
Seems to be a pattern of over committing to purchases. Things happen, I get that. Going forward, I hope you now plan for the unforeseen. That’s the responsible thing to do, not just for yourself, but for your family and all of those involved in your dealings.