Amidst a scene of absolute terror and confusion gripping the royal banquet, a senior female figure steps forward to change the course of events. Her sudden arrival is meant to calm the widespread panic and offer a practical solution to a crisis that has left the king and his advisors entirely helpless.
The primary approach among commentators is that this woman is not the current king's wife, but rather the elderly Queen Mother—the wife of Nebuchadnezzar, making her either the current king's mother or grandmother [אבן עזרא, מלבי״ם, יוסף אבן יחיא, חומת אנך]. Her absence from the banquet up until this critical moment is understood in several complementary ways. The gathering was primarily intended for men [ביאור שטיינזלץ], and remaining away was a matter of respect for her dignified status as a widow [יוסף אבן יחיא, חומת אנך]. Furthermore, as the primary and most distinguished queen, she resided in her own private palace, leaving the ordinary wives to attend the public festivities [מלבי״ם].
She finally enters the hall directly in response to the chaos, the fearful conversations, and the visible panic of the king and his ministers [רש״י, מצודת דוד, ביאור שטיינזלץ]. However, her exact timing reveals a deeper wisdom. Initially, she held back from suggesting Daniel as an interpreter. She worried that if the message turned out to be disastrous, the king might direct his anger at her for being the catalyst of bad news. Yet, as she listened to the advisors offer flawed interpretations and watched the king agonize over his sheer uncertainty, her perspective shifted. She realized that for the king, knowing the truth—no matter how bitter—would actually provide relief compared to the torture of total ignorance. At that point, she knew she had to intervene [אלשיך].
Stepping into the banquet house, she raises her voice with the traditional royal greeting, wishing the king eternal life. She immediately moves to ease his dread, urging him not to let his thoughts terrify him or allow his face to lose its color [מצודת דוד, מלבי״ם]. These calming words are not empty comforts. She speaks with absolute confidence because she remembers Daniel's extraordinary wisdom from years past, arriving fully prepared with clear advice and a definitive solution to the king's distress [יוסף אבן יחיא, ביאור שטיינזלץ, חומת אנך].