Svelna

The queen of the House of Svelna, Svelna was aided her recovery from a virus when, because of their giant size, the Doctor and Rose Tyler were able to eliminate the infection by arriving in the TARDIS inside her body. The Queen's recovery ensured that diplomatic agreement was reached, ensuring several centuries of inter-galactic peace. The Doctor politely declined the offer to stay as her Royal consort. (DWAM: A Delicate Operation)