Hillary didn’t react like that.
Instead, she was a screaming banshee at the thought she might lose.
I don't even remember the context, but I think whenever she dropped her "Why aren't I ahead by 50 points...??" comment, she knew through her internal polling, she was going to lose.
I think her only purpose now is to make a certain portion of the American electorate feel bad that they didn't vote for a woman when they had the chance. It's irrelevant whether or not she was qualified, or whether people trusted her; her goal now is to make these would-be woman voters feel remorseful, and ensure they vote for the female candidate next time.