Before the day

A few days before your Robo-Slut is intended to arrive you receive an envelope with what looks like an acrylic nail inside along with a small yellow piece of paper with red writing. It reads:

"Instructions: adhere acrylic nail onto index fingernail. To activate your 'spell' draw a circle in the air facing your Robo-Slut. To deactivate repeat the motion again. Enjoy your Robo-Slut. Warning: company not liable for Robo-Slut's actions if spell is deactivated"

"Sounds simple enough." You think after shrugging off the warning. You place the nail onto your finger as instructed and a light shines out of the tip for a moment before fading. All that's left is the finish preparing yourself for the meeting