I strongly suspect that Angelaís fridge could be made to work with small expense, if she is willing to fix it herself or get a friend to help. If it works ok on line voltage it will work on propane
.it may need the orifice cleaned, the burner blown out with compressed air, the gas pressure adjuster or possibly a new gas pressure regulator. The gas tank might even be empty.
Danfoss type compressor fridges are very efficient but they all require more solar
, more battery storage, and if you switch to lithium, a different battery charger and a solar charge controller that can charge lithium batteries. Itís a significant expense compared to just fixing what you got.