Thanks! Though I found Donna's end terribly depressing and not particularly suiting of her awesomeness (I do think it would have been more honourable to die) I can also see that this is the man who thought it was a good idea to save River Song to a giant harddrive rather than let her die, even before she really meant anything to him, so the chances of allowing his BFF to "burn up" in front of him are... pretty slim.