I'm sorry about your mom skittles.
Please let her know that depression with serious or prolonged illness is very common and most doctors know this and will treat it along with the medical illness. But, the doctor doesn't know if a patient is depressed unless the patient says they are, so it is up to her to let her doctor know.
Or course she's depressed about being in pain and now hearing that it is something she will have to learn to live with. That must be very hard.
I hope she gets a lot of support so she can stay as active as she can. Staying active is important physically and emotionally, too.

ECHOES