Just from what I know now, if I were on the jury I wouldn't let her walk. But we don't know yet what evidence the jury will see. Those "odd points" you mentioned, if brought to the jury and believed would seem to undercut her version of events, so it is by no means clear that this was some innocent mistake. Even if she was mistaken i thinking that this was her apartment, I still see her as reckless, again just from what I know at this point.
Even if she somehow avoids criminal sanctions for this, it's almost a sure bet she'll be civilly liable for damages to the estate or family of the deceased. And I'd be shocked if she kept her badge after this. The police department is not going to want the public outcry keeping her would trigger. Not to mention the liability risks for the city in keeping her employed as a cop.