You mean other than "save all of existence?" You seem to be wanting to set her good/evil dial based on the weight of her actions. How does "every soul on the planet, plus all the ones that have come since then" come in on that scale? Just curious how you are figuring the lives of hundreds of thousands of people, and possibly millions of people, and their souls into that equation. When, exactly, does that balance get outweighed by "kidnapped two people"?
Also a key point: she is back here protecting the gate personally today, and the proof of that is right in front of us. So the answer to your question seems to work out in her favor.
This isn't about Belkar. Stay on target.But putting that aside, how would you compare her to Belkar in terms of them being involved in gate-saving tasks counter-balancing their evil (if any)?