"Come in, Miss Weasley." Minerva was behind her desk, furiously writing on a parchment. Before Ginny had even approached, she had tied the message to an owl and sent it out, just in time for another owl to fly in through the open window of her tower office.
She took the message it dropped and gestured to a perch beside her desk as he took up another piece of blank parchment to answer what was, undoubtedly, another own from a worried parent.
"Sit." She said it without looking up, yet, but then after scanning the owl she did, and her eyes were dark ringed but not tired. "You've news from Potter? How are they?" Because she knew that 'where' would not be a question the girl could answer.