OK, so I must be honest, being the parent of a very shy child- when I heard of this issue she was having my heart smiled a bit (my apologies for that confession to our absolutely amazing and favorite kinder teacher!) It's just that I worried and worried and worried and ended up having a chatty girl who needed to learn to hush at times. Who would've thought?? Although, all that means to a mother is something new to worry about, right?
I'm not sure if this bracelet worked well or not, but what it did do is make our conversation about the problem a little more interesting to her and by turning this into an activity it made a lasting impression. She still remembers that talk.