Thank you for your work Poguemahone.
I personally really like the suggestion of astro about Fey spelunking Alex. I also like what JIP suggest and I would love to see Fey retain some souvenir of her experiences.
If I might make a suggestion, it could be fun for the first contact between Fey and Alex to be with Fey used as a makeshift condom on Tim dick without Alex yet knowing about the existence of the fairy.