Is she sinful if, upon hearing the news of her father's death, she says "No, no, no," without objecting to God's decree, but rather not believing it?

We ask Allah for mercy and forgiveness for your father. We hope you are not sinful for what you uttered at the time of the tragedy, as you did not intend to object to Allah's decree and destiny, and it did not reach the level of discontent. The Prophet, peace and blessings be upon him, said: "He is not one of us who slaps his cheeks, tears his garments, and calls with the call of the days of ignorance."