AUSTIN, Texas —  Former first lady Lady Bird Johnson remained in an Austin hospital Monday, but her fever had subsided, a family spokeswoman said.

Johnson, 94, was admitted to Seton Medical Center four days earlier for a low-grade fever that she was treated for throughout the weekend. Her temperature was normal Monday, spokeswoman Elizabeth Christian said.

It was not yet known when she would be released, Christian said.

"Mrs. Johnson had a good night. She continues under observation," she said. "She's just resting comfortably."

As Johnson received visits from family members she was alert and communicating with facial expressions, Christian said. A previous stroke left Johnson with difficulty speaking.

Johnson, the widow of the late President Lyndon B. Johnson, has lived in the Austin area for decades. She makes occasional public appearances and is devoted to conservation and the Lady Bird Johnson Wildflower Center that she founded.

Instead of cards or flowers from well-wishers, it's suggested that donations be made to the wildflower center, Christian said.