Unseen Presence
Your powers of remaining unseen have become so potent that you can effectively cause yourself to disappear indefinitely and remain hidden even if you walk around. You are completely ignored unless someone specifically looks for you. People will move about in ways that cause them to avoid you and will even take actions to remove themselves from your vicinity. Their unconscious minds will do nearly anything to prevent their conscious minds from realizing that you are there.
No roll is normally required; however, if the character speaks or engages in violent physical activity (e.g. combat), she will probably draw attention to herself. The Storyteller may ask for a Wits+Stealth roll to determine how well the character remains unseen. At least three successes are required to allow her to speak and still not be seen.