Charles Ellicott Commentary 2 Samuel 11:26

"And when the wife of Uriah heard that Uriah her husband was dead, she made lamentation for her husband." — 2 Samuel 11:26 (ASV)

Mourned for her husband. —How long this mourning lasted we are not told. The usual period was seven days (Genesis 1:10; 1 Samuel 31:13), and although that of a widow may well have been somewhat longer, it was doubtless, under the circumstances, made as short as was consistent with decency.