Meredith Gentry (of the Sidhe oriented Hamilton books) is using a mirror to communicate with her nasty Aunt. At the same time, Frodo and Galadriel are having their magic fountain moment. Through a cosmic screwup, the Gentry crew - Meredith and her boy friends:

Doyle (the Queen's Darkness, Nodons, Bearer of the Painful Flame)
Frost (the Killing Frost, once was Jackie Frost)
Sholto (King of the Sluagh, Lord of That Which Passes Between, Lord of Shadows)
Galen (the Green Knight)
Mistral (the Storm Lord)
Rhys (Cromm Cruach)

get zapped into the LOTR, landing next to Galadriel and Frodo.

Does this influence the makeup of the mission to get the Ring to Mount Doom? How do the elves and Gandalf respond?

Does the sexual nature of Merry lead Aragorn to stray.

Merry has the powers as do her crowd as seen in the latest book.