I'm mostly of a mind with Flidget that I don't like Tonks because she frequently abandons everything for Remus. The way Flidget puts it, Remus fights at the end for his son. Tonks fights at the end because she's worried about Remus. You've got a kid lady! And now he's an orphan! Well done there.

Other than that she's just so...Mary Sue. And if it weren't for fanfiction, it probably wouldn't be a big deal. But there is fanfiction, so we're so OVER that dynamic.