Harry Potter was saved by a mother's love more than once. Harry may not of had his mother but he had a lot of comfort from mother like figures. Whenever Harry needed comfort it was always from a mother figure.
I know this is supposed to be a mean girls reference but I Don't know if it's just me but I like the ending in the book alot more. When Harry repairs his wand then puts the elder wand back in Dumbledore s tomb.