What an absolute gosh darned delight that was. I love musicals but I tend to be pretty cynical about musical episode of TV shows, but I think that's probably the best one I've ever seen? It helps that a. its still a coherent episode with a plot about the musical itself, b. its effectively paying off three or four different emotional character arcs we've already spent a lot of time with and c. the music is actually really well written both lyrically and compositionally
It doesn't reflect well on her, but it does feel sort of...real, in a way that people can sometimes be shitty in real life. She's tangled herself up emotionally for a long time with someone who for various reasons just isn't going to be a good romantic partner for her, and there's certainly a bit of catharsis in realizing "oh maybe I just can stop trying to make this work and stop feeling bad at how I can't ever seem to make it work". Because the whole Spock thing clearly has been making her miserable, because she loves him but somehow it seems impossible to turn that into a whole emotional relationship. Its just that immediately after that moment, if you really care, you still need to go check on the person you're hurting. I really do hope they get a moment in the next episode to get some actual closure with each other.