Vet soon, let them worry about debriding the wound - they'll have cleaner tools for this and may be able to provide pain relief or put her under while they work on her.It was lots of white pus. I didn't touch it or examine it too closely this morning, but it was white in the center, although it didn't appear to be plugged, and black around the edges, where the dead flesh was. I'm tempted to cut it off, but I think I should wait for my vet to do it tomorrow. Thank you for the instructions!
Maybe keep it topped up with antibiotic ointment in the meantime and give another epsom soak or two today so it stays open and free-draining.