Gabriella is a Dunmer assassin and a member of the Dark Brotherhood. She is a good friend of Olava the Feeble. She and Festus Krex are the only members of the Dark Brotherhood who wear the shrouded outfit.
She is usually sarcastic, though she expresses gratitude toward the Night Mother's new residence in the Sanctuary, saying she "deserves unwavering respect and support," a radical contrast with many other members of the Brotherhood. However, she finds Cicero too "exuberant" for her liking.
If the Dragonborn became the Night Mother's Listener and assassinated Vittoria Vici on her wedding day, Gabriella and Astrid devised a plan to weaken the Penitus Oculatus by killing the son of Commander Maro. Gabriella offered a special reward if the Dragonborn killed Gaius Maro while in a major city, which starts up the quest Locate the Assassin of Old.
Subsequently, Gabriella is killed during the Penitus Oculatus assault on the Dark Brotherhood Sanctuary. Her corpse can be found on the table where Festus Krex, Babette, and she usually stayed.
- "Death is but the time to sleep forever, in the Void."
- "This is not the time to keep Astrid waiting."
- "What a curious question. Well, I enjoy moonlit nights, taking long walks on the beach, knitting and unicorns. In fact, I once took a seaside stroll, on a moonlit night, and discovered a unicorn... which I proceeded to stab in the throat with a crochet needle. I'm a woman of refined, yet simple tastes." (When asked about herself.)
- In a conversation with Festus Krex, Gabriella admits that she feels her death is coming soon. During the Penitus Oculatus assault on the Sanctuary, she is killed.
- During a conversation with Babette, Gabriella says that she killed one of her targets using her sexual appeal to seduce him and drop his guard. She also admits that she usually uses this tactic.
- Gabriella has a pet frostbite spider named Lis.
- Gabriella is voiced by Julianne Buescher, who also voices female Altmer.
- Gabriella, along with Lis, are the only members of the Dark Brotherhood who are never seen outside of the sanctuary.