It sounds like you have the scratch under control by now, and if Jen suggests something, I would think that would be the thing to use since I'm sure she gets a lot of scratches, but just for future reference.....

Terry got two really bad deep cuts on his fingers about 1 1/2 months ago now, from the ladder of the motorhome. (I was inside and he opens the door and yells in "Got some band-aids?" We always have band-aids in the MH (motorhome) so I just went to the medicine cabinet and got the box. I get to the door to hand them to him, and he's bleeding profusely all over the place! I was ready to take him to the emergency room because I thought he cut one of his fingers off or something, but he would have none of it. ) Anyway, he was worried about it becoming infected so as soon as we got home, I had soak his hand in warm salt water. My Grandma always did that. She said the salt draws out the infection and any other bad stuff in there. Then I had him put alcohol and hydrogen peroxide on it to kill any bacteria that the salt didn't get. Then he put some triple anti-biotic ointment (generic Neosporan) on it and bandaged it up. He kept it bandaged and ointmented for about a month. It healed up so well that once the brown grows out from under his nails, you won't even be able to tell he almost ripped two fingers off.

Oh, and needless to say, now when he comes down the ladder, he is extra, extra careful. I'm just glad I was there. One of my biggest fears is that someday he'll be doing something on the roof - fall off - and I won't find him until later that day when I go look for him because he hasn't come home yet.