I dont think it's the item placement.
Me, specifically, I gave her the item pack, including the .cfg. Which means she has the exact same item placement and such as me. I can see her items. She can't see mine. Some of it may be the placement, but the fact that only I can see hers is the problem, basically.
I think I downloaded the pawsome item pack, and gave her it after, with all my other items.