Yes she was very lucky it wasn't a very deep wound so no stitches were necessary. The biggest concern was the location and how hard she may have hit her knee on the fence but so far she is bearing full weight, the swelling is gone, and there doesn't seem to be any damage to the join *knocks on wood*.
I did managed to talk to the barn worker and casually asked him if he had seen her leg like that last tuesday morning and he said yes that she must have done it monday night or early tuesday before he got there.
When I asked him why he didn't bother to call anyone he said it was because someone had erased my number from the board and the BO never answers her phone anyway so he just didnt bother.
he certainly got an earful from me and I made him put my number into his cell right then and there.