I've already created a new Lady Death under Avatar Press (her current keepers).
I think the only info in the 1847 entry is wrong - as far as I know, she never appeared in Kiss Kiss Bang Bang. Also, it'd possibly be more useful if the Avatar entry showed up by default when users are searching for her.
I'm going to try and keep updating the new record - feel some kind of responsibility for it now. Lol.
Had to double check this but after Chaos went bust, they sold Lady Death to Crossgen. But then within a year Crossgen went bust too. So I'm guessing the current Lady Death entry is correct in a sense.
Since you can't seem to change the publisher associated with a character, I'll try creating new one. I don't quite get where the Kiss Kiss Bang Bang entry came from either. Not sure she was actually in that.