If you have a guest bedroom in the condo you could get a small safe for that room. You only have a few on hand and I really think you could talk her into a central storage unit rather than have them loose and under her feet. Even if you do not bolt it to the floor or wall it does make it harder for the run in grab and run out to the waiting transport. The smaller safes still require two guy's to move and are a deterient to theft.