Aimee Copeland, the 24-year-old Georgia woman who lost both hands and feet to a bacterial infection, is now breathing on her own, her father said.

"Aimee is being Aimee. She's cracking jokes, speaking frankly, displaying her usual early morning grumpiness and she has been off of the ventilator for over 10 hours," Andy Copeland said in a blog post Sunday night.

Though the University of West Georgia student is still receiving an oxygen "mask," Andy Copeland wrote, "the important thing is that she is getting zero breath per minute (bpm) assists. In other words, she is breathing completely on her own! How cool is that?"

"Bottom line: Aimee is doing great today."

The progress came after a harrowing week, in which Copeland's remaining foot and both hands were amputated.