Hey do you think that Felix kinda gaslighted Athanasia into giving Claude a chance since she was five? Like why is he encouraging this relationship with he knows that Claude abandoned her on purpose and he witnessed him almost kill her? And he was relying on her to "fix" Claude as if he was misunderstood.
And lily too, both kept pushing this idea onto Athanasia when she knew otherwise. I think this might have influence her decision in going back to him when Jennette had suggested she'd go.
I wouldn't call this gaslighting but his support of their relationship definitely influenced her decision to give Claude another chance. It's almost as if Felix cared more about Claude than Athy. Claude has done lots of things that Felix has been ignoring: torturing people, killing the concubines, killing his marriage candidates, killing a marquis for an alleged intimacy with the neighbouring Castorea (Side Story: I Became a Father One Day) threatening to kill others for daring to be annoying or boring. Sometimes Felix objects weakly but then Claude tells him to shut up and he does. Amazing that he doesn’t dare to go against Claude but expects it from child! Athy. Don’t get me wrong I like Felix but the fact that he let LP Athy be executed without a proper investigation and Lily killed alongside her leaves a bitter taste in my mouth especially when the manhwa lowkey ships Felix/Lily.
You could interpret it that way that Felix' top priority wasn't Athy reuniting with her family and having a healthy relationship with them but her healing the bruise Diana left on Claude's heart and the family thing was just a method to achieve that. In the Lovely Princess he was content with Jennette "healing" Claude and didn't make any big attempts to mediate between Claude and LP Athy although he was sad about the treatment she received. In the end it didn't matter who was fixing him.
This makes Felix look morally grey but c'mon the only other explanation I have is that he's stupidly naive which also doesn't fit with his Knight of Crimson blood persona. As Claude's guard and advisor he should be capable of recognizing a person's true nature. Claude never bothered to hide his ugly side from him. In LP Athy's own words Claude has always been cruelly honest from the start. Felix is just that devoted to his master. He was willing to risk Athy’s life to improve Claude’s well-being.
As for Lily: inconsistent character. No one in their right mind would want the child they raised in the same room as the man who murdered a dozen women in cold blood. Felix was friends with Claude and saw him in a good light but Lily was never that close to Claude. She has the worst impression of him, he kills everyone in the Ruby Palace, dumps a child on her and tells her if ever word about it gets out he kills everyone there, and then he appears again wants to play daddy and suddenly attempts to kill his daughter again lol wtf.
If Athy had a support system from the start that wouldn't encourage her to go back to her abuser she wouldn't have gone. Lucas offering to kill Claude doesn't count, he's basically Claude 02 anyway. Everyone she cared about is connected to Claude. If she was losing Claude she was going to lose the others too.