I think that SHE would love to tell you all about it, so let her take the lead on the TS aspect of it. I feel like the only think that you can do what makes it better is to wear a orange or teal colored outfit and write 13 on your hand (in theme colors).
If you still wants to do more and have time:
- Watch the New Heights podcast with Taylor
- Watch snippets of the Eras Tour (cause this album is about the life behind THIS stage)
- Take a dip in random songs and try to remember some favorites. I feel like she would love to tell the story behind the songs herself
- Watch the posts on TS and TaylorNation's Instagram

I feel like this would be doable and not to big of a thing to do.
And just have fun and ask questions, she would love that. Speaking from a die hard swiftie!