On the whole "did she work at McDonalds" she may have a slight misremembering of the exact details. If she completely made up working at a burger joint if not McDonalds, that's wrong. If she can't remember all of the details, it's understandable.
Take Trump where he claims that he was one of the best high school baseball players in the state of NY. According to him, he even went to a pro tryout alongside future hall-of-famer, Willie McCovey. Sounds impressive. Investigations showed that Trump batted <.150 in high school but guess what, there are missing box scores from the 60s. I doubt the best player in NY batted that low. Perhaps his batting average was north of .150. And as for trying out alongside McCovey, McCovey was already in his 5th year in the MLB when Trump was a senior. So unless Trump tried out for the majors while in junior high, he's completely lying about the situation.
As always Trump's lies are so numerous that we forget how many small lies he's told over the years.