The statement from her family follows:
At long last, we are able to confirm that Hannah has been found and is safe! She is being cared for and has been positively identified. Hallelujah!
The media has already heard and some have immediately taken the most sensationalist route possible, but please don't put much credit in what they are saying/guessing/making up. The accurate details will all come out in time.
Thank you all so much for everything that you have done to help in this effort. It has been a long two weeks for all of us since she was declared missing, and we are overjoyed that she has been found.
with great rejoicing,
Hannah's family and friends
While they do say to reject the media reports, a little more information can be found in this New York Magazine article and this NY Times blog post.
Thanks for all of the support and help in spreading the word from blog readers!