Her "death" bothered me. Hey, Martha lemme have a look at that medicine degree of yours... Of course she was absent when Donna checked Jennie's hearts but still. For his part, the Doctor seemed to be in denial. Otherwise he should have remembered how fast his people heal. He's had worse himself a few times. I thought that she had "Spin Off" written all over her. I doubt that we won't see her on board the Tardis.

Donna asking good questions is one of her most endearing feature. What the Doctor and assistant often show us is the value of the outsider's way of approaching problems, of thinking outside the box, of questioning assumptions.