See this was an organic way of showing how Finn’s life and death continues to affect Rachel without having it take over the episode or be too maudlin.
I am curious about next week and the source of Rachel’s anxiety. It would make total sense that the reason Rachel is so anxious is because she is doing this without Finn being there to cheer her on, just like she always thought he would be. I hope that is the reason behind her pre-show “meltdown” but some how I doubt it will be. I think they will make the reason something completely dumb and that will annoy me.