The conclusion was terrible; I can't argue with that. It makes absolutely no sense for her to leave Omerta alive, especially with him knowing her secret identity, nor does it make any sense for her not to kill that other mafiusu who knows who she really is. At the same time, I frankly detested the idea of having Sal turn out to be alive, and having repented of his life as a hired assassin, and having only ever done one job as an assassin. Ugh.
I'm not sure I'd agree that it's problems are that it self-important or aggrandizing; Huntress is the star of the series, after all. I also don't agree that Batman was jobbing to her in that conclusion, or comes close to it. What makes you say that?
Huntress' father issues with Batman have varied tremendously from writer to writer; Cavalieri, who invented the post-Crisis Huntress, didn't put that into the character at all. Greyson wrote her as being so desperate for his approval and for acceptance as part of the Bat-family that, well....Rucka, who rewrote her origin (and vastly improved it) in Cry for Blood makes allusion to the idea but also has her explicitly reject it, so you can look at that either way. Simone interestingly wrote Dinah as acting as though Batman's approval mattered a great deal to Huntress, but did not, so far as I can recall, write Huntress that way so much; again, you can take that multiple ways: maybe Dinah understood her really well, or maybe not. The ending to this mini does not, in my view, ignore this issue at all; I think it actually overemphasizes it. Her whole speech to Batman and Catwoman at the end would have made much more sense coming from the pre-Crisis Huntress, talking directly to both her actual parents, than it did in this case going to two people she hardly knows.