or do you think she is just being incredibly magnaminous?

Or perhaps being cautious, or perhaps acting on legal advice, etc. Personally, I'd doubt that her private thoughts and feelings would completely match her public face.

My guess is much would depend on what one believed before and if one had believed the pair were correctly found guilty in the original trial, it would be unlikely that this appeal would have cleared every doubt about their involvement. Accepting that the evidence is to weak for a conviction and that an aquittal was therefore the correct verdict is a different matter IMO.