Final answer:
The warning sign that should be identified when considering the therapeutic nurse-client relationship is crossing boundaries.
Step-by-step explanation:
In this scenario, the warning sign that should be identified when considering the therapeutic nurse-client relationship is crossing boundaries.
The staff nurse in question demonstrated a behavior that crosses professional boundaries by manipulating the assignments in order to care for a particular client whom they liked. This compromises the objectivity and fairness in the nurse-client relationship, as it prioritizes the nurse's preferences over the needs of other clients and the integrity of the therapeutic relationship.
By crossing boundaries, the nurse undermines the trust and professionalism that should be maintained in the therapeutic nurse-client relationship, which could potentially negatively impact the client's care and trust in the nursing staff.