Brunhilda also thought like that. If Athena truly had only Li Yunmu in her heart, she would certainly return. She wouldn't cower and retreat in front of her father because of the large attack about to happen on Scandinavia.
When Athena arrived before the two warring camps, and Zeus saw his daughter, he became extremely happy. If Athena could turn into a mole for them, than exterminating Scandianvia would become even more easier.
"Daughter, you arrived at the perfect time! Now is the time for you to contribute to Olympus and become the mole in Scandinavia, then we can coordinate from inside and outside to completely eradicate Scandinavia."
"Father, your daughter has come to persuade you to withdraw your soldiers and not to act as a mole for you."
"What are you saying? Withdraw soldiers? Athena, you forgot your identity! You are an ancient god of Olympus, so don't tell me that you intend to betray your mother country and cross blades with your father?"
