"Pray my white blood cell count goes up and my 103 fever goes down! Yikes!" she wrote on from her hospital bed.
On Monday, Abby shared a picture from physical therapy. She was suspended in a harness as she walked on a treadmill post spinal surgery.
"Just put one foot in front of the other & soon you'll be walking out the door!" the former reality TV star captioned the photo.
The Dance Moms star was diagnosed with non-Hodgkin's lymphoma after an emergency spinal surgery in April.