The 2nd bit of the GMT was easier than the first, thanks Guy - a lot less climb and my feet started out a bit harder. Three days of force 4 north-easterly were pretty unwelcome though. I've been busy with the chap stick since I got back and Mrs VB's been sneaking up on me with Nivea gloop for my face. In the end it was 73 miles.
The feet are blistered again, but in different places. There's a really weird one which runs all the way from the bottom of toe 4 on my right foot, up the gap between it and toe 5 and then right across the top. It's raised with a lot of fluid and there's some blood in it. The pain in the right heel is worse though. Sharp stabbing but confined entirely to the extreme outer rim. I'm 99% sure that there is just some sort of deep blistering under the callouses though, and it's not Ritchie's more troubling plantar fasciitis.
Respect and congrats to your niece by the way. The 10 Tors is supposed to be a brute given that you have to pack camping gear and provisions as opposed to just the overnight stuff I needed for the B&Bs. The boggy terrain is much more tricky too (Essex, Herts and Cambs are all baked hard) and there's probably more climb. I'm afraid the only way to harden the feet up is to do the miles. If she waits until the worst of this is over and then goes out again she'll find it easier next time. You might want to wait a while before recommending that to her though .