How do I ask my friend to remove my solo from her karaoke video?

I sang the chorus with a breadstick as a microphone because the room's second mic wasn't working. By breakfast, that twelve-second section was the opening of my friend's public weekend video.

There were seven of us in a private karaoke room. I saw her recording and waved at the camera. I thought she was making something for our group, like the photos we usually send afterward. I hadn't asked where the video would go.

I messaged, 'Could you take my solo out? I'm happy for the group photo to stay.' She replied that she'd spent two hours editing, the clip was affectionate, and I had waved straight into the lens. She offered to remove my name from the caption. A colleague had already sent me the video with three laughing emojis, which is exactly the audience I hadn't imagined.

I can see why she thought I was joining in. I also want to be able to sing badly with friends without making a public performance of it. What should I say next, and what would a clearer recording agreement look like for another karaoke night?