Final answer:
The social worker should continue to see the client and explore an alternative payment plan.
Step-by-step explanation:
The social worker should continue to see the client and explore an alternative payment plan. Since the client is only authorized for two more sessions according to insurance, it is important for the social worker to find a solution that allows the client to receive the necessary treatment without financial burden. Exploring an alternative payment plan, such as adjusting fees based on the client's financial situation or connecting the client with resources that can provide financial assistance, can help ensure that the client continues to receive the support they need.