Final answer:
Dorothy should document the nature of the threats, applied safeguards, and her rationale for concluding the threats are acceptable. Additionally, consulting with her firm's supervisor or the ethics department for confirmation on her decision is recommended according to the AICPA Code of Professional Conduct.
Step-by-step explanation:
When Dorothy, a tax senior associate, applies the AICPA Conceptual Framework and determines that threats to her independence are at an acceptable level due to her relationship with Joanne from the accounting staff of ABC Toys, Inc., the AICPA Code of Professional Conduct requires additional steps. Not only must independence in fact be maintained, but also the appearance of independence. Because the evaluation of threats is subjective, she should document the nature of the threats, the specific safeguards applied to mitigate those threats, and the rationale behind the determination that the threats are at an acceptable level. Furthermore, it may be prudent for Dorothy to discuss the situation with an appropriate person within her firm, such as her supervisor or the ethics/compliance department, to ensure that her determination of the threat level is appropriate and the safeguards are sufficient.