My family is faced with a challenging situation: Our 93-year-old grandfather has woken twice in the night and attacked his wife, mistaking her for a burglar. Their children (my in-laws) are now making a decision to remove them from the apartment and move them in with them. However, they are going to keep them in the same bedroom. We are concerned that this isn't enough, and that they need to be separate at night. Any thoughts on best steps?