Final answer:
The nurse should refuse to rewrite the patient's chart entry and emphasize the importance of accurate documentation.
Step-by-step explanation:
The best action of the nurse in this situation is to refuse to rewrite the patient's chart entry. It is important to maintain honesty and accuracy in medical documentation. Falsifying records is not only unethical but also illegal. The nurse should discuss the situation with the nursing supervisor and explain the importance of accurate documentation for the patient's care and safety.