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 Shrouded Robes.
Usually sarcastic, Gabriella expresses gratitude toward the Night Mother, saying she "deserves unwavering respect and support"—a radical contrast with Astrid, whose leadership is threatened by the Night Mother. Of Cicero, she finds him 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.
- "Death is but the time to sleep forever, in the Void."
- "Kill well. And often."
- "Need something?"
- "Stay safe."
- "This is not the time to keep Astrid waiting."
- 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 who gets killed during the attack on the Dark Brotherhood Sanctuary by the Penitus Oculatus's agents.
- Gabriella is voiced by Julianne Buescher who also voices female Altmer.
- When asked by the player to tell about herself, Gabrielle will say she enjoys knitting, long walks on the beach, and unicorns. Quite possibly a joke, she says she met a unicorn while walking along a beach, and stabbed it with a crochet needle.