"Find love wherever you like, but never marry for love. Your title belongs to House Atreides—use it to strike the best possible bargain." A marriage alliance to the Dowager Lady Rhiannon of the planet Iro will gain House Atreides unlimited access to the planet's untapped riches, but unbeknownst to Duke Leto, his new wife is far more dangerous than he ever could have anticipated.
Names can carry a lot of meaning. They can shape your future and make you brave. So when she chose her name after finding herself in another reality, she named herself after one fictional character to deal with another. Because when you find yourself in the Doctor's Universe, you need all the courage you can get.