I am sorry Theodora

Gentle hugs to you.
The first thing that comes to mind is to contact
211.org (United Way/Alliance for Information and Referral Systems; call 2-1-1 in the US). Of course, you may have already done that indirectly through your counselors (or maybe not - no one counselor knows everything).
Here's my initial attempt to construct a "Theodora's Situation for Dummies," an easy-to-assimilate presentation of what's up:
- Older woman of compromised health on disability - COPD, PTSD, MDD, GAD
- Currently living in _______ for X years/months, but conditions (especially high altitude) exacerbate COPD
- Had planned to move back to _______, had housing set up there
- Hostile son controls all (other?) funds (why?)
- He insists she move to a house in _______ - another cold, high-altitude area with limited medical accessibility - or not move at all
- The woman's psychiatrist, therapist and domestic abuse counselors strongly advise her not to move to son's choice of location
- Current lease is almost up and no where to go
__________________
My dog

mastered the "fetch" command. He would communicate he wanted something, and I would fetch it.