I found mum in bed at 11:30, and though the promise of a cup of tea got her up without too much effort, she hardly had a word to say. I asked her if she felt cold; 'yes' she said. I closed the door and then had a thought...'are you hot, mum?' I asked. 'Yes', she said.

She moved to her armchair and fell asleep right away. When Carrie, our new nurse, turned up I asked again about the chances of having the Risperidone administered in the evening. It seems mum has cooked her goose. No matter how sweet and mild she is now, she has already passed over the Rubicon, the system will never forgive her for hitting a nurse on the head with a packet of pills or, on another occasion, scratching her arm. Carrie discussed the situation as if the nursing service was a third party, and its rules were an unfortunate fact of life. However, she suggested that I speak to Dr Humerus, which I did, immediately.

'Dr Humerus.'
'Silvia, it is Mike Pritchard here. I think we may have gone a little too far in the other direction with the Risperidone.'
'Is she zombiefied?'
'That's the word, exactly.'
'Let's cut it. It will be the Risperidone. We'll get her off it and then see if she is over the aggressive blip.'
'OK...'
'If not, perhaps we can put her on a much smaller dose - 0.25mg. We can't have her hitting you on the head with a bin again.'
'No, I don't think I'll ever grow used to that.'
'I'll send a fax to the nursing service to ask them to stop it.'
'OK, great. How long should I leave it before calling you again to report on mum's progress?'
'Ohh, a week.'
'Righto, I'll talk to you then.'

Mum picked at her lunch, supporting her head with one hand, her elbow on the table. I've been carrying a minidisc recorder around with me for weeks, hoping for an opportunity to record some of mum's Jabberwocky speech, but nothing she's saying at the moment has that colour, that complexity, that quality of surprise. It is all just monosyllabic and slurred. Regan was right to raise the alarm the other day. Rachel told me she had pretty much the same experience with mum at the weekend.

Even dad was beginning to get concerned. He said as much when I asked him how the two of them were getting on.

So the pendulum swings...