Genuinely cares about you and will go out of her way to help you.
So you try to get the work right and she marks it without even reading it properly. If in doubt she'll mark it wrong. So many times Ive picked out things that she has marked wrong which Ive followed up and have in fact been correct. On the other hand she has good knowledge of the subject and is a lovely lady. But that doesnt matter when your grades dont reflect your hard work.