Update and new screenshots inside.
This weekend I've mostly been working on finishing the changes that the zoom feature needs (drawing him, adjusting hair and strand movement to scale properly, extending the background), adding vertical control for swallowing, and improving the eye animation.
First of all, here's a look at what the fully zoomed out view looks like. I would like to improve the way he looks and maybe make him stand a bit less awkwardly, but I think this will be okay for a first release.
For swallowing control, I want to avoid adding any extra buttons, so the plan at the moment is for vertical mouse movement to tilt her head slightly, and for her to close her mouth as you make her look up. She will swallow automatically if she has her mouth closed (and full).
To go with the new head tilting, I've improved the control I have over her eye animation, so she can now look up at him more realistically, and will do so on her own occasionally.
Finally, with the new animated lips and eye control, I thought I would try changing her expression a little. This is only a minor test, so there won't be anything in the next release, but this could possibly be a start on happy mode.