Abby Lee Miller is staying positive amid her horrific cancer crisis.

This Sunday, May 13, the Dance Moms founder shared a video selfie from her hospital bed, congratulating all the great mothers out there.

"HAPPY MOTHERS DAY to all the wonderful, giving, kind, loyal, caring mothers * not to the ones who owe me money" joked the star.

As Breaking Celebrity News readers know, Miller, 51, was hospitalized just days after entering her LA halfway house.