12:09 video
Sensation play, is a large item with Stone Fetish, and when you have a model like Tilly who really thrives on those sensations you make sure to really use as much of those items as you can with her.
Riding crop, flogger, metallic pinwheels, they were all used at this time, and with Tilly bound she was truly in her own mind space.
Very soon a gag was needed, in this instance the black silicon bit gag made a very good starting point.