The object belonging to Abigail is aknife. It had once belonged to her father and Hannibal gave it to her in a therapy session of sorts. The knife is made out of human bone, though that may not be obvious simply be looking at it or handling it.

When it's found, whoever touches it will get a glimpse of Abigail's regular life. If they're lucky, they might see her hands sketching a beautiful picture. Or they could catch a glimpse as she creates a gourmet meal with whatever ingredients she has available. They might simply see through her eyes as she strums her fingers on a table, pretending it's a harpsichord. Less lucky and they might see an arrow pointed at one of the monsters, then taking it down with a well-aimed shot. They may even catch a glimpse of her field-dressing it. If they're not too squeamish, they could notice that she does it with ease and precision.

In order to see Abigail as herself, they would have to handle it during one of the few times that she looks in a mirror. As she prepares herself for the day, she fixes her hair to hide the spot where her ear used to be and ties a scarf around her neck to cover the scar. It's a routine that she's become used to, though they might see the sadness in her eyes as she hides her scars.