Task: Question Answering
Input (English): Passage: Thieves Ed Dexter and Harry Ames are trying to steal some valuable pearls. When Ed discovers another gang, led by "Doc" Evans, has the same idea, he tips off the police to get rid of the competition. Then Ed and Harry get what they were after. When the authorities connect Vivian to the robbery (she had worked with Ed and Harry in the past, but not on this theft), government agent Ross McBride is assigned to get Vivian to lead him to her partners by pretending to be a crook named Danny Ackerman. However, Vivian quickly realizes Ross is a plant. Nonetheless, she plays along, as the other bunch of crooks is following her. Meanwhile, Ed has hidden the pearls in the handle of Vivian's hand mirror without her knowledge.
On their travels, Ross and Vivian stop at a farmhouse, where they help the distraught Dabsons with the birth of twins. Ross and Vivian gradually fall in love with each other. When he overhears her phoning Ed to tell him she is quitting her life of crime, he is at a loss what to do, "whipsawed" as he calls it. He confesses to her that he is government agent; she reveals that she already knows. He then embraces her, but drops the mirror he was holding, revealing the pearls. He does not believe her protestations of innocence. 
Question: What are the first names of the people that assist with the birth of twins?
Output (English): Vivian.