Maybe I can help.
My wife is claustrophobic, and she does best with a "walk-around" bed. She has told me that as long as she can see an 'escape route' on her side of the bed, she's okay. The last three trailers we've owned, we've made sure that she can see her way out to the main living area from the bedroom while lying down.
Do your looking based on that, then only show her what fits the above. Start with this, only then show her anything that doesn't marginally fit.
Different people react differently, because they see things differently. For instance, we've been in a couple 5th wheels, and she couldn't get out fast enough.
Hope that helps. Good luck with it.
