A few months ago you agreed to give Stacy some of your size, making her almost 7' tall and you dwindling to barely more than 3'

Stacy immediately fell in love with her new height and how small you were now and has become much more dominant in your relationship. Unfortunately for you Stacy is also kind of oblivious to things going on around her, so you're constantly in danger of her accidentally bumping into you. She's very enthusiastic about cuddling.