Are you sure she's a crowntail? By the look of those stress bars and her fins I'd say that she's a fin biter, which can make veiltail girls look like combtails, or even crowntails.
Well that was what I was told she is. I'll look into those others you mentioned see if she might be. I know the person that had her had not kept bettas before and she is not in the best shape. Shes very sweet though.