I think it would be best if you posted screenshots of the omitted information and the harassment you got from others, and perhaps linked to your TOS. There needs be more information on what's happening here.

That said, even though a specific date was never given (though Anthrocon would count as one of these), you clearly missed the general deadlines by a long shot several times. I understand unexpected things come up, but it probably would have been best if you either made hers a priority because of the missed deadlines, or told her that there is no deadline and you'll get to it as soon as you sort out your other problems. From the commissioners POV, it would get frustrating if an artist said they were going to have it by this time but then not have it over and over again.