I have asked my trimmer to come out and see what she thinks is going on. I previously have been in touch with her through pictures and email. Up to now, neither she nor others I have asked have thought this was a concern, but we were monitoring it to see if it improved, stayed the same or worsened. In my opinion it has worsened in the past 3 weeks and, as I said, I have asked for someone to come out in person for advice. However, thought I'd ask here if anyone has every come across this before.
History is good -- no lameness, was some thrush (hence the heavy trim on the frog) but gone now, no tenderness, no bruising. I can poke around and it doesn't bother her but it worries me that this is so deep. NH-Sole.jpg NH-apex-02.jpg
She has been trimmed since these pics were taken just to do her heels and a roll.