Originally Posted by MN Tigerstripes
Don't cut the mat out. Cut it verticaly in the middle (straight up towards her dock). It will be easier to de-tangle. You'll still lose some hair, but it will be less.
As far as the no bathing thing. Get some detangler for people or use some baby oil to get it de-matted. Then braid it or bag it to keep it decent.
Agreed - if a dog I groom has a couple matts I just slice them into smaller sections and comb those out. This one sounds particulary nasty, so work at it very slowly with a good dose of conditioner (human, horse, doesn't matter at this point). Maybe give her a bucket of grain with a couple good sized rocks in it so that she has to move them around to get all the good stuff - should distract her for a good while at least...good luck!