((Just assuming that she'd be lead in the same way everyone else was, sorry if I'm overstepping my bounds here. ^^;; ))
Like those who had reached the mansion before her, Aria was lead about the mansion by notes, two of them, that directed her through. The first hint of her presence outside of the "meeting room" though, would be the Gastly that passed through the wall, pausing in its orbit and spinning around to stare at everyone within the room. The perpetual grin on its face widening, it chuckled loudly, falling silent as Aria stepped through the doorway and resuming his orbit. Considering her pause in the doorway, just long enough to examine those within, this meant that it was passing through the walls on either side of Aria, a rather odd sight to be seen.
However, seemingly satisfied by the view, she stepped inside and pulled a chair over by the entrance, taking a seat and letting the violin case slung over one shoulder drop to the floor behind her, oh-so-gently. She opened it and pulled the instrument out, letting it rest on her lap before closing the case. At this point, she'd begun to hum, a sound so quiet it was inaudible to anyone else.