I would imagine it's because it's just not that good. Her story was bad and the only reason to watch was to see what happened to Ang and the OG crew. I would rather see stories of the previous versions of the Avatar but only if they're done in the style of the original series. And for gods sakes if they do please don't screw around with the characters too much. We know some things about them already, don't change it for "you know why" reasons.

Then remake this show because we loved it. Yeah I'll it it had it's ridiculous moments but all of them do. My wife and I actually never ed the name of the show as we always referred to it as "bleeding out" because that phrase was used a lot in that show lol. "Hey, Bleeding Out is on!" would be accurate LMAO. Great show