A good shaman would be able to perceive the source of the bond in the Spirit world, which would be not necessarily in "linear" time, and be able to negotiate with aspects of both peoples' Selves, or even other Beings that surrounded them and influenced them.
But, regarding poor Sveta, did they suspect that she might be schizophrenic? Sometimes the symptoms of psychism are similar to those of schizophrenia. I knew a woman who was a good psychic, and when she began having her experiences, she was not, at first, exactly sure what was going on, though she had an inkling. She actually went to a doctor (psychiatrist) to be tested, and in spite of the "voices" and many symptoms which could have sounded like paranoid schizophrenia, she was found to be sane.
But that wasn't in Russia. It was in Germany. I am saddened and horrified to hear of the dreadful way psychiatric patients were treated in that hospital, Irisha! Even animals elsewhere are not treated with as much disrespect as that.