Victoria was staring at her headless neck from her bed. This was it. The cut Fiona did with the Sonic Knife meant her head was never going to reattach to her neck stump. The reality - she’s permanently a Dullahan now - got her to start touching herself all over again.
Fiona walked in - well, her lower half did. That got Victoria going even harder. Fiona could still reattach at will, but she took a plunge to cut herself both in half and cut off her head. And her lower half was treating Fiona’s inert head like a soccer ball.
Victoria got off the bed long enough to grab her girlfriend’s currently useless head. She walked her headless self over to the closet and tossed the object head in and shut the door. Fiona’s confused lower half stumbled around trying to find where she kicked her head and gave up, walking out again.
Victoria went back to the bed. She grabbed her working head by the hair. And she got to work stripping off her remaining clothing.
(story done as a commission/donation reward)