Take a wider view of family relationships, not limited to relationships based on blood or marital ties. E.g. in a crisis people are unlikely to turn to family they don't feel close to, and some are willing to care for individuals who aren't related to them. Without knowing what these relationships mean to the individual, we cannot understand how they may act. Hence they focus on meanings, looking at a range of personal and intimate relationships which aren't conventionally 'family' but still are seen as significant to the individual, giving them belonging.