It's a matter of taste or opinion, don't you think? Bad path is her getting fucked in your secret prison, good path is about you forgiving and gettting closer to her.

Good path Irinlia becomes a diplomat for you and improves relations with another country, although this stat is mostly irrelevant (at least so far). Bad path Irinlia stays in your secret prison. Since you can view both paths' CGs regardless of which you choose, it's really just a question of how you want to role-play Ryen.