Yes, she starts brainstorming

As much as it felt like a betrayal, Willow decided that she'd liberate Mackenzie of her clothes. Everyone here had already seen her naked on video by now anyway, so what difference did it make, right? Surely Mackenzie would understand. Or better yet, she never needed to find out! Willow could try and strip Mackenzie without her realizing it was purposeful. So, Willow debated her options.

She could try and strip Mackenzie piece by piece. She could pretend she was drunk and clumsy to do that pretty easily. A trip and grab here, a wobble and yank there. Although, that wouldn't keep Mackenzie's clothes off her. To do that she'd have to manage to actually rip or destroy the clothes, which was definitely trickier to do.

On the other hand, maybe it would be easier to trick Mackenzie out of her clothes. Willow could spill something on her costume, lure her to a bathroom, and claim she'd go wash Mackenzie's clothes while the redhead waited there. Although, that would assume Mackenzie cared enough about this costume to worry about staining it. She might just say "fuck it" and keep partying despite the spill.

A trickier idea, but perhaps the simplest option, was talking Mackenzie into playing beer pong with her and then letting themselves get shutout. The redheaded witch had claimed she wouldn't play, but a few drinks later that might be easier to change. Although, that had no guarantee they'd actually get shutout by their opponents. Willow could throw her chances easily enough, but what if Mackenzie made a shot? And even worse, Willow realized, she'd have to then perform a naked lap too!

Each of her options seemed plausible, but none of them jumped out as ideal. As Willow grabbed another drink and rejoined Mackenzie and the others, her mind whirled through her options.