You'll need to adapt this question depending on your loved one's state of mind, but it can cover such things as anger, silence, sadness, moodiness, and memory problems. (Obviously, you'll probably want to ask this particular question without your loved one present.) Laying this out before hiring someone is a win-win for you and job applicants. You can get a sense of how they'll be with your loved one, and they'll get a sense of interpersonal skills required for the job.