[She doesn't say anything for a long time, possibly long enough that he thinks her already asleep, and any anger she had has faded too]
That is foolish, and there is no reason for it. My life as a person has already ended. It will be more beneficial for us-- for you to think of me as only a familiar. [Her small voice hardens] After all... there will be a time when our contract is at its end.
If such thoughts are the cause of your discomfort, no longer think of me that way.