Nope, she is just faking it, she simply got better at it.Wholesome in my weird horny manga?
But she is responding apporiatetely given the social situation, our character's social intelligence is really damn good.Some people with autism are very much like this. They need to memorize how to make the correct facial expression & when to use it.
Can't be sad for her if all of her emotions are fake. Either she's capable of learning real emotions (which is good) or she's incapable of learning real emotions but is getting better at her goal of being able to convincingly imitate them (which is also good).Nope, she is just faking it, she simply got better at it.
Good for him, sad for her...I think?