Sensei being lawful good is probably just flattery.
I don't think empathy is necessarily about being accurate. It's about being able to feel the emotions you perceive other people having. Ayane has that in spades. Her recent card to Sensei is a good example of that. The way she talks about maya at the end of it isn't something she would say if she were thinking exclusively about her own self interests or if she were inconsiderate of others. She speculates on their relationship and practically encourages it because it might bring comfort to two people who she thinks are hurting. She has her own ambitions and problems sure, but her actions are easily influenced by how others feel. At least when she picks up on those feelings. Which is why she does nothing to stop or even discourage Ami, Maya, or Sana from pursuing sensei.
When maya's callousness comes to bear during reset related topics, Ayane is quick to take issue because she sympathizes with other people. Even if you just watch her expressions in most events her concern for others is obvious.
Ami I have a hard time understanding. When Ayane called her out for being manipulative and fake, I thought she was out of line. But then Ami kind of just admitted to it? It implies that shes just some sort of psychopath who is only acting a role. Even if that's not entirely accurate, the amount of disdain she shows Ayane in chapter 4 makes it really hard to believe she cares about anything but Sensei.
That's a peculiar way to flatter someone, and even then, Sensei just ignored it. He wasn't flattered. Ayane also ends up being surprised by Sensei sleeping with others, not noticing Molly was jealous of Otoha, not doing anything when Maya cried, and she doesn't really seem to understand anyone when it comes down to it. Ami, Makoto, Maya, Sana, Sensei, etc. Keep in mind that she thought Sana was completely innocent and pure, when that's just an act. Her answer to Ami's problems is also simply violence.
Empathy requires accuracy or it's not actually empathy. It's about understanding and feeling what others feel. Overcoming it together. Being wrong about what someone is feeling, shows a lack of understanding. Ayane thinks she understands others, yet never really does, which speaks for itself.
That card was actually Chika's idea to get Sensei to come back. Ayane mentioning others, especially Maya, was just to get what she wanted in the end, Sensei back. She's definitely not trying to get Maya and Sensei together. Ayane was simply out of ideas and was hoping for a miracle the night before.
Ayane also can't stop others from pursuing Sensei. Sensei goes to them, and even if she tried, that'd mess up her relationship with Sensei. That hasn't stopped her from secretly slapping Ami, trying to cuck Maya on the roof, and fucking him on both Ami's and Sana's beds behind their back, though.
Sympathy and empathy are different things. For example, Makoto isn't really bothered by Maya, like Ayane was. Ayane can understand being belittled by Maya, but not how being belittled by Maya actually makes others feel.
Ayane's kind of earned Ami's disdain (most have at this point). Lying to her, intentionally leaving her out of things, trying to fuck the man she loves on her bed, etc.
Early Chapter 4 Ami reached her breaking point, which has likely been building up since Sensei let slip he carried stuff at night for Maya back in Chapter 1. At least. From Ami's point of view, her friends have continuously been betraying her and endangering the only family she has left, for a long time, behind her back, and nothing she does can stop it or him, from hurting himself and her. It's not just Sensei who broke her. Everyone's been hurting her:
Imagine if your best friends were sneaking around, fucking, and endangering your love interest that you do virtually everything for. One wrong move could lead to them being locked away. That's more or less Ami's life.
Just add voices, delusions, blackouts, more or less raising that adult love interest as a kid, and ptsd from watching your parents be taken from you, on top of it. This world also likely plays a factor. She seems aware of how things don't make sense, and are usually repetitive.
Overall: Ami has been driven insane and recently reached a breaking point. Ayane helped her get here.
