Face-Scale / 痛みスケール

I found this Face-Scale this morning, on the wall of bed-head of my mother in the hospital.
I had a phone call from the nurse yesterday that they were putting the Durotep Patch(Drug Patch) on her to ease pains.
At the last stage of the terminal cancer, my mother can take no more foods nor drinks for a few days.
Her eyes are almost always closed and there is almost no way to communicate with her. Her face only shows sometimes the pain of the 4-stage of the Face-scale.

Since July 6th,when she was firstly taken to the hospital, I deserve Full-time award by visiting my mother in the hospital twice a day, morning and evening.
Still so,I cannot help regretting that if I have done for her as much as possible. She is dying very soon.