My guess would be that Annette got dressed and went to her place to prepare for the coming work day.
The 'smooch-smooch-see-you-later' scene, being neither relevant to the plot, nor especially funny, happened off-camera, so to speak.
Alternatively, she went to the bathroom (which, since they were in Tai's Do room) would require putting on a at least a minimal level of covering. Now that she's taken care off her first thing in the morning toilet requirements, and Tai's visitors have left, she and Tai are free to get down to some early morning bow-chicca-bow-wow.