Reincarnation of the Archangel who Transcended Divinity

There was an angel named, Serafina. She was once leading an army of angels, serving a God who she cherished and loves to serve him, by the time she knew there was a particular event that was dreadful among the angels, and even for her. A war broke throughout heaven, the battlefield becoming more destructible as time flew by, the never ending war against the demons and monsters didn't meet its end, and continued. Eventually leading to Serafina's death, but through the God who she served, leading to a path of a new life and made Serafina bloom again as a human, who will lead to everlasting life and justice.