As someone who won't go to malls at Christmas (I want to stop, put my arms out, ball my hands in to fists and start spinning, demanding loudly that everyone stop invading my personal space) I feel her pain. Heck I can't remember when I went to a mall when it wasn't Christmas.
Before we bought our V-Lite we looked at several models with the sloping ceiling over the bed. QQ! I worried about that. DH reasoned that we wouldn't spend many waking hours in the bedroom anyway...still I had reservations.
One of the selling points on our TT was the walk through to the bathroom feature. With the bathroom door in the "V", off the bedroom, the BR seems larger.
Has she researched: Phobias and Visualization- How to Use Visualization for Phobias for Beginners
Yes, there's always the option of a very low dosage of anti anxiety to be used until she resolves this issue, but in her shoes I'd do that only as a last resort.
As someone else mentioned, the less clutter the better in the BR...even down to extra pillows removed not only from the bed but from the room.
With the storage cabinets over our bed, I would have sworn I was sleeping in a slight head down position. We put *half* a 2 inch topper under the upper half of the bed, even though levels placed on the slide floor, on the mattress pedestal, etc. all showed absolutely level. The half topper fixed the problem....even if it's only in my mind.