I'LL NEVER LEAVE YOU! Russian movie with English subtitles

When the betrayal of a dear person was deafened, when a knife was stabbed in the back by the one to whom she gave all of herself without a trace, when reality and obsession intertwined into one whole... When tears choke and rage blinds - an invisible hand takes and leads along the winding path of retribution... Only remains one question: forgive - or revenge?