She doesn't want to be condemned to death by Creon by burying her dead brother.
Obedience to the king as well as loyalty to her country (her brother fought for the opposition) vs. her loyalty to her family.
The incentive moment in "Antigone" is where Antigone decides to resolve her ultimate conflict no matter what happens. That ultimate conflict is when she decides to bury her brother Polyneices herself since nobody else would.
He doesn't let Antigone bury her brother. When he found out that she disobeyed him, Creon had Antigone killed.
Antigone's brother
Ismene
Liesel is escorted by two armed guards when she helps to bury her dead brother.
Bury their dead brother with her.
twice
Ismene, her sister
Hi my name is Iroda Juraeva and my answer is Antigone must go against Creon and bury her brother because that she breaks a human law and insults her judge
Since King Creon stated the 'unbreakable' decree, this presents a conflict for Antigone. Originally, Antigone was going to bury her brother, Polyneices without consent from her uncle. King Creon now presents a new problem for her, since she now has to break the law in order to save her brother from everlasting damnation (his soul would walk the earth forever).
In Sophocles' play "Antigone," the protagonist attempts to bury her brother Polyneices twice. After her first attempt, she is caught and brought before King Creon, who has forbidden the burial. Despite knowing the consequences, she resolves to bury him again, leading to her eventual arrest and tragic fate.