She can use for a limited time a but plug,if at work i sugest a small one,a chastity belt,not allowed to touch herself..for a nr of hours(take in account going to toilet,etc) also you can limit her to going to toilet...she will have to be carefull with every glass of water and think of you(again done with care as she needs 2l of water a day).made to be naked in her house(if she lives alone),told to go in the toilets at work and masturbate...

Good luck and have fun
shy