She has definitely buried something in our front garden, I saw her taking a peak on one of her trips over here and went out there after she'd gone to see if I could see what it was but unfortunately as hard as I tried I couldn't dig in the ground to see what she buried, I've not mastered that skill yet but I do have a plan.
Next time she takes a peak I'm going to go out there, as she can't communicate with me I should be able to sneak up on her and find out. It must be something very important the care she's taking over it!