Harry let Umbridge help him! That's a laugh! Think about it in book 6 when Scrimgeour told Harry that Umbridge had been telling them at the ministry that Harry wanted to be an auror. It was implicit that she was suddenly for him, even though the previous year she had vowed and declared that the ministry would never have him as an auror. I think Harry would drop his ideas of becoming an auror if it came down to her helping him.