User blog comment:Neosforce657/Two-way mirror in OOTP?/@comment-76.177.247.39-20110725150336

No. The mirror in OOTP is supposed to represent Harry trying to break his connection with Voldemort through Occlumency. The mirror in Deathly Hallows is a present from Sirius so Harry could contact him (also in OOTP, but cut from the movie.) Harry never uses it because he doesn't want to endanger Sirius. It shatters in Harry's trunk. He finds the biggest peice and takes it with him, and Aberforth gets its pair from Mundungus Fletcher after Dung raids number 12, Grimmauld Place. He then uses it to watch over Harry.