I won't offer any advice about the looks of the incision, but don't feel bad about putting a cone on her. My Newlie was in a cone for 8 weeks after surgery for his ACL tear, the longest 8 weeks of my life, I might add. (Normally, it probably wouldn't have taken that long, but there was a complication.) Anyway, you do what you have to do, and every time I would try taking the cone off, he would wait for one minute of inattention, sneak into another room, and when I found him he would be licking away.
He just had surgery again to have a mass removed from his leg. When they were going over his discharge instructions, they said "If he starts licking, you need to get him a cone." I said "It's not if, it's how soon, let's go ahead and put a cone on him." So, they did.