Answer: Satisfaction with her social support.
Step-by-step explanation:
A person's satisfaction with his/her social support is described as link or connection that a person has with another person or group of people that provide life satisfaction to them. Care,support,help,comfort etc is provided by social support.
According to the question,satisfaction with Rihanna's social support is the main key for determining the comfortable support that is been provided by support group to decrease stress and challenges of her life.