Emily's father was killed by Lozla Nataniel Henk. She went to Worcester in the year 1140 to avenge his death. There she met the Doctor and helped him uncover Henk's plan. The Doctor, Captain Darke and she found Henk had been breeding Krillitanes for their oil and was trying to sell it to galactic companies. She and the Doctor defeated the Krillitanes and Henk. After these events she returned to her home planet and went to college there. (PROSE: The Krillitane Storm)
Multi-adventures reference the rare instance when a companion is shown or stated to have multiple adventures with the Doctor but only appears in a single story.
If a medium is not mentioned, then this incarnation did not have companions who were original to that medium; it does not mean that this Doctor failed to appear in that medium.