Oh my gosh! I've got it! Go to the bead shop and see if they have one of those glass round holders that you put items in! You could make a holder for it and put it onto an inexpensive necklace chain for her. I have seen some people use unused round glasses for this too. You just pop out the glass and use the foil they use for stained glass to close it with. If you glue a wire into it, that would be the hanger.