Excellent point. I don't think she really does. She probably even thinks we can be 'friends'.
In 11 years and over 25,000 posts on this forum, I have yet to see a marriage come back from infidelity without the wayward spouse credibly fearing that they'd gone too far, and were losing (or had already lost) their betrayed spouse. Not long-term, anyway (I've seen some false reconciliations that didn't "stick").