2-month-old Maxwell Keener and 20-month-old Adelyn Keener were last in Payne County, OK.
An Amber Alert that was issued for two children has been cancelled.
Officials said the children were believed to be in immediate danger because Lewis has been accused of using meth while in their presence.
The children are said to be in good condition. She is 2 feet, 6 inches tall and weighs about 30 pounds.
Oil prices can reach $60-65 per barrel
WTI was trading lower on Tuesday at $52.21 a barrel, while Brent slipped to $54.83, as of 10:40 am GMT. U.S. crude stocks fell 1 million barrels in the latest week, according to the U.S.
Mark Zuckerberg speaks on Cleveland murder
Mark Zuckerberg on Tuesday didn't shy away from controversy over disturbing videos that were posted to Facebook. Pennsylvania State Police tweeted that Steve Stephens was spotted on Tuesday morning in Erie County.