Brown and scabbed is very normal. The brown is the scab material and a bit of dried blood. I do not think that there is undue swelling, and certainly no redness generally associated with infection. I think she is just fine. However, just to be sure, take a photo once a day for the next three days. If the swelling increased significantly over that time, or if it become red and angry looking, or puss is present, contact your vet immediately. I have a feeling that none of those will happen.