She doesn't, is the short answer.
She does discuss, however, the integration of personal values into one's philosophical system. I was struggling with a possibly similar issue; I had previously regarded rationalism as an end in itself. Emotions were just baggage that had to be overcome in order to achieve a truly enlightened state. If this sounds familiar to you, her works may help.
The short version: You're a human being. An ethical system that demands you be anything else is fatally flawed; there is no universal ethical system, what is ethical for a rabbit is not ethical for a wolf. It's necessary for you to live, not as a rabbit, not as a rock, not as a utility or paperclip maximizer, but as a human being. Pain, for example, isn't to be denied - for to do so is as sensible as denying a rock - but experienced as a part of your existence. (That you shouldn't deny pain is not the same as that you should seek it; it is simply a statement that it's a part of what you are.)
Objectivism, the philosophy she founded, is named on the claim that ethics are objective; not subjective, which is to say, whatever you want it to be; not universal, which is to say, there's a single ethics system in the whole universe that applies equally to rocks, rabbits, mice, and people; but objective, which is to say, it exists as a definable property for a given subject, given certain preconditions (ethical axioms; she chose "Life" as her ethical axiom).
I don't know that I would call that "objective." I mean, the laws of physics are objective because they're the same for rabbits and rocks and humans alike.
I honestly don't trust myself to go much more meta than my own moral intuitions. I just try not to harm people without their permission or deceive/manipulate them. Yes, this can and will break down in extreme hypothetical scenarios, but I don't want to insist on an ironclad philosophical system that would cause me to jump to any conclusions on, say, Torture vs. Dust Specks just yet. I suspect...
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