Lady Bird Johnson spent another day in the hospital Sunday with no major change in her condition, three days after she was admitted with a slight fever, a family spokeswoman said.

"We still don't know when she might get to go home, but her condition is stable," spokeswoman Elizabeth Christian said.

The former first lady, 94, has spent the weekend at Seton Medical Center surrounded by family members, including daughters Luci Baines Johnson and Lynda Johnson Robb. She was admitted Thursday night.

Lady Bird Johnson was alert, resting comfortably and communicating with visitors, Christian said.

Her husband, former President Lyndon B. Johnson, died in 1973. Lady Bird Johnson has remained active publicly in the years since while living in Austin and spending time at the family's ranch.