Step 1: Cut a hole in the box
Step 2: Put your junk in the box
Step 3: Make her open the box
xD
on a more serious note. Keep the rope thingies. Could be useful
On an even more serious note: Start looking for the mouse. It knows too much and must be captured... alive
EDIT: That, and if that doesnt work, try to bring the mouse out by using the ropes.