Okay, I think the only thing I want Lena to experience for sure is the mermaid one, and she won't be too bothered by it. The only thing that really gets to her is losing her Caster powers. If she sees the sunbathing turns her legs back, she may just go back in the water for more fun swim times! So she'll splash around, encourage others to try it, and just generally have a ball.

I may have her do the dreaming one too since that has a lot of potential. I'll probably pull some events from canon for her to have nightmares about, so if anyone's up for that, we can hash out what we want the other to see?

As for the rest, I happily offer her to react to these shenanigans and offer her support!