How bad? No, no, ignore that, doesn't matter, does it? [No usual bubbliness here, and this is far too personal for the Doctor to feel comfortable using a video feed, so she only gets his voice. This is, unfortunately, something the Doctor knows all about.] You just...go on. Do your best to make up for it. Try your hardest to never be that person again.

Hope one day you'll finally make up for it. [Or die trying. Sometimes especially die trying.] It's not easy. Some days are worse then others.