MISSOURI CITY, Texas -

A woman with dementia who walked away from a home in Sienna Plantation Monday morning has been found safe.

Over the course of more than six hours it appears the Patricia Reger, 76, walked more than seven miles before being spotted by a motorist on Highway 6 at Riverstone Boulevard.

"It's a mystery but she's been located so we're happy," James Baker, said about his mother-in-law's disappearance.

Reger was last seen at around 9 a.m. at her home in the 9900 block of Chriesman Way. According to Reger, his father-in-law noticed his wife was missing along with her purse after he completed some morning housework.

The man called family. Family members called authorities.

Reger, according to a family member, has a form of dementia, akin to Alzheimer's Disease.

Neighbors and deputies canvassed the area in cars and four wheelers.

At around 3:00 p.m., Fort Bend sheriff's deputies announced that Reger had been found safe near Highway 6 and Riverstone.

Deputies believe that Reger had walked the entire distance from her home, although her route was unclear. She was spotted by a citizen who had seen the Silver Alert.

She appeared back at home after getting a ride from Fort Bend County Deputy. She had a smile on her face, and appeared to be uninjured.