“Dear brother, how your father and gentle mother begged and begged me to remain! So did the soldiers round me, all undone by fear. But in my heart I ached for you. Now let us fight him, and fight hard. No holding back. We’ll see if this Akhilleus conquers both, to take our armor seaward, 290 or if he can be brought down by your spear.”
So, Athena is saying she will help Hektor while she has no intention to.
