Soiled spots on back of back pack.  I think this should have been at least mentioned in the description.
Strap tearing away from backpack at the top.  Something else that should have been mentioned.
Another indicator that this bag is not new.  The interfacing is tearing away.  Yes, it arrived like that.  Highly doubt that happened during shipping.
And even if the seller somehow missed everything else I've mentioned so far, surely she would have noticed a child's name in it when she loaded the other item into it before wrapping this in brown paper and shipping it.  I have reason to believe this child is related to her even (last names the same) so she had to have known this item was used.  So why, pray tell, was it advertised as "new"?  I know I would not have bid on this had I known it was used and had these issues.