Since you don't know where she is staying, maybe she didn't take the body pillow because she's sleeping on a twin bed and doesn't have the room. I had to get a twin bed and I certainly wouldn't be able to use one comfortably.
As for the things you've bought her, they might cause too much pain. Both spouses suffer during separation. I am the one who left (because of physical violence between my spouse and my son) and I feel horrid. Just because she is the one who left, it isn't all peaches and cream. Please believe that!
M: ten years BS23, BS17 Step-SS20, SS16, SS14 Separated: August 07