This story is heartbreaking. I’m sorry for all your dear mother is enduring. It has to be extremely difficult to witness as her son and loving caregiver.
You’ve mentioned her mental state often, along with her chronic pain, it’s not surprising she’s depressed. Have you thought about contacting a mental health professional for an appointment to see if they can prescribe an anti-depressant for her, short term, to get her to a better place mentally? Kind of like a bridge to get her back to a healthier mental state. Possibly then she’d feel more hopeful about addressing her pain. I believe this may be paramount in getting her to eat, which in turn will help her regain strength and hopefully give her the desire to seek out options that may be available to her.
I’m also wondering if you’ll clarify whether she’s getting proper nutrition. I’m a bit confused because you mentioned that she’s eating three meals a day and taking supplements, but you initially mentioned that she wasn’t eating due to her inability to prepare meals while you’re away at work. If so, please find a way to have meals that are readily available (frozen meals that can be quickly heated, or left-overs from a previously prepared meal) so she’s more likely to get the nutrition she needs while home alone. Consider healthy snacks as an option also. Snacking is better than eating nothing.
I’m wondering also whether she’s been icing as we often recommend? If not, please encourage her to do so, it‘s free and easy to do while resting, watching tv, or napping. Icing does help ease pain.
Best wishes for change to occur leading to the resolution of her pain and your ongoing concern.