She goes on to call these 'the boring stuff', so hopefully not.
I would go with 'other quality time' or 'exercising'. Of course she might be asexual or just not willing to log any time spent on that topic.
Personally, I would give it its own category, just because it's such an interesting data point with regards to frequency and seasonal variations. Higher libido during summer holidays? More advanced snuggling on cold winter days?
Under socialising?