I have a lanyard on each bag and on locking car clip keys onto the lanyard, never lost inside or outside bag, easy to find on returning to vehicle. At home have a hook for keys, always keep them on it ( not in an obvious place but handy for me)
Obviously she would have almost certainly survived had she been wearing a seatbelt. Surely an adult in their thirties does not need to be told to buckle up, it should be automatic, even more so when in a vehicle being driven erratically at speed. The bodyguard could have told them but would...