FORT WORTH, Texas (AP) — Longtime Republican U.S. Rep. Kay Granger of Texas is having “unforeseen health challenges” that have worsened in the final months of her more than two decades in Congress, a statement from her office said Monday.

The retiring representative, whose last House vote was in July, is suffering from dementia and her son says she moved to a senior living facility.

Granger's disappearance is especially significant given the tiny majority Republicans hold in the House — and the massive votes that are taking place, including the government spending bill — in the waning days of her tenure.