Sarah F. Mignin(Credit: St. Charles police )

ST. Charles, Ill. (CBS) – Police in St. Charles say a disoriented 89-year-old woman has been missing from her home since yesterday morning – and was last seen this morning in Michigan.

Recently, St. Charles Police say, 89-year-old Sarah Mignin had been forgetful.

She was expected at her daughter’s home – and didn’t show up.

Her credit cards showed she bought gas in Walworth, Wisconsin on Sunday.

Then, St. Charles Police Spokesman Paul McCurtain says Sarah Mignin’s credit cards showed she stopped at a convenience store in Woodland, Michigan, this morning.

McCurtain says an “authorization required” alert had been placed on those credit cards – and the store clerk should’ve stopped Mignin – but failed to.

“It’s very unfortunate that the clerk didn’t ask additional questions. They related to us she seemed disoriented. Unfortunately she was allowed to go back to her vehicle and she drove away from the scene.”

Woodland, Michigan, is between Lansing and Grand Rapids.

McCurtain says Sarah Mignin has been driving a 2004 white Honda Accord.

Mignin was last seen driving a white 2004 Honda Accord like this one. (Credit: St. Charles Police)