I don't suspect CP at all, but I have had experience with GLS, they are a really large freight delivery company (think mattress, furniture, etc. The kind that sets up appointments and then delivers bulky items to curbs from large trucks, to the door or in home- white glove delivery. I would guess his tracking circled the area near her home, prior to the crime. Even possible he delivered to her inside or outside her home. I don't know about delivering smaller boxes, maybe (like oversized boxes that could still fit in a van). We def don't seem to know much about the warrant, but they sure did move on from him quickly.