Bone charm in dust district black market

[madcat6204]

Is there any way to get this bone charm without breaking into the black market? I've been kind of determined not to do that, because I understand it renders the market unusable for the rest of the level. But I have no intention of leaving a level without gathering all the artifacts. Does anyone have any clues?

[Dais]

Just sneak in and don't get caught, take he charm and sneak out. If you take only the bone charm the black market won't be closed.

[madcat6204]

Ah, excellent. Thank you.

[Mr.Bando]

the storesperson who runs the blackmarket lives upstairs with her brother. check the picture behind the desk and the calendar in the hallway for clue on how to open the combination lock behind the store