What I found unrealistic
Was that, although she and Ivan where clearly quite prepared to move around (apparently in both France and Spain), for work, Suzanne made no attempt to find work in her primary field.
Two physiotherapists disappeared from the town where she was working and yet there was no work for her and it never occurred to her to try elsewhere.
Not of any real importance in the context of the film as a whole but it did niggle as we watched them struggle in poverty.