The women worked at an assisted living facility where they allegedly encouraged residents to fight with each other, then recorded the incidents and posted videos on social media.
The shots may speed up the progression of arthritis and hasten the need for surgery.
The actress will spend 14 days inside a federal lockup outside San Francisco.
Authorities say a Florida man repeatedly called 911 to report that his roommate had stolen his marijuana.
The suspect can be seen on security footage grabbing the painting, titled "Surrealistic Bullfight: Burning Giraffe," off the wall and walking out the door.