I would also say that the meaning of the time reversal is that she is a protagonist with the understanding of the consequences her actions and seclusion brought. It gives her the empathy to understand others, even the ones that wrong her. It's not just the fuel that drives her change, but the...
I honestly think this is a good romcom that managed to have a rare aro character represented. Not every character needs to have romantic feelings for someone else in order to feel worry, jealousy, anxiety and many other aspects of human connection.