there's only one scene that i CAN NOT unlock for indigo
so basically, starting from the office you head into the showroom (where the three droids are displayed.) Head left and you'll enter that short hallway in between the showroom and Indigo's room. Turn around and you'll see a panel next to the door. You'll need to have the repair task as one of your chores, and you MAY also need a variant that has the light blinking on the panel to get the scene, though i'm not sure if the second part is actually necessary.
the reason why i'm so confused is that i have done both of your advices and tutorials on how to do it but was unsuccesful. i have tried it with just standing in the room, standing in the room with gloves and the screwdriver, failing the task with her catchng me in there but i just can't get the last piece of gallery :)