Looks like we will be starting with filling a bowl with salt water and giving her a bath to soak out the wound first and see what's under all that nastiness.
I'm sure this won't make many folks here happy, but while we are very responsible pet owners, we weren't seeking pigs. We re-homed my dog when we moved in together a couple weeks ago (after 2 years and hundreds of $$ trying her Doberman was not going to get along with my golden...long story) and the friends that wanted her 'asked' us to take the pigs in exchange. We (and the kids) researched guinea pigs for a week before saying yes and between the 5 of us the pigs are quite spoiled with a very nice cage and tons of fresh vegetables and occasional fruit as well as plenty of floor time and an outdoor playground fence.
My thing is that for a pet that cost $19us at the pet store that we just got a week ago, I'm hesitant to blow hundreds of $$ when I can just get a new one for $20.
Had this been a year from now, I would certainly feel differently...
Anyway, guess I'll wash her off and see if I can get to the skin and see how bad this is and repost.