If you are a night guard
Victoria had shown you the ropes on how to survive the night shift, and you had this entire week off. Victoria decided to introduce you to all of the animatronics when they were in 'Day Mode', and was waiting at the front doors for you.
If you are an animatronic
You learned that Victoria was coming to visit you, to get to know you. You saw her walk in, and head over to you.