Final answer:
Ismene is Antigone's sister who initially resists the idea of disobeying Creon's edict against burying their brother Polyneices.
Step-by-step explanation:
The sister of Antigone who initially is against disobeying Creon's order is Ismene. In Sophocles' tragedy 'Antigone,' Ismene is presented as the more cautious and compliant sister. When Antigone plans to bury their brother Polyneices, which goes against Creon's decree, Ismene objects, highlighting her fear of the consequences and her wish to obey the laws of the land. However, despite her initial resistance, Ismene's loyalty to her family ultimately induces a feeling of guilt and the desire to share Antigone's fate, although Antigone refuses to let her do so.