During the shot where she is flipping back and forth in bed from the waist up, poor Linda seemed to have hurt herself during the shoot…and I think that's Ellen Burstyn coming to Linda's aid at the end of the shot.
She indeed did. In fact, she speaks of her permanent back injury from making that very scene. She said her parents were not the type to sue, but it has to suck when you're back hurts a lot years after. She credits being a vegan and other healthy lifestyle habits helps with her back problems.
I don't know if I could ever see myself as a vegan (I am a straight up carnivore…LOL!) but Linda has such a wonderful way of seeming to just take things in stride….finding the good out of the bad.  She seems like such a beautiful person.