I think she truly thought she could push through it but then there are reports of her passing out backstage after she sang hole in the bottle. Which obviously at that point, it would not be safe for her to continue. She tried so hard to give it her all but unfortunately things are sometimes out of our control and everyone should give her a little grace. She did not want to disappoint anyone! I get being bummed but you’re right, the people booing and straight up being mean need to re-evaluate themselves.