Yeah,the seller should do it ... But you could to, should your friend not.
When you get it, if it's been reset back to like-new, all you have to do is plug it in and iTunes will walk you through the start-up and authorization. If you daughter lives with you, may I suggest you just use the same iTunes account you're using. That way, you can share apps and it'll make the "maintenance" on it easier.
Hope this helps. Let us know how you get on.
Marilyn