Interesting! We don’t really have snakes of that size here so i was just curious.Rattle snakes come in all sizes. They start out in life just six inches long and fangs half an inch apart. Unfortunately, I've seen fang marks that close together when my cat got bit.
You can try hot compresses on the lobe to reduce welling, counter infection. Two weeks after the fact, though, there isn't much to be done. Her body is dealing with it or she wouldn't be acting normally.