She generally served as a guard or protector in her duties and was generally partnered with Apoc. She called Neo a "coppertop" implying that Neo was producing electricity in the human farm. She held him at gunpoint in case his avatar was possessed by an Agent while Trinity removed a bug implanted in Neo's body.
Switch was ruthlessly killed when Cypher pulled her data probe from her headjack aboard their hovercraft as part of his attempt to return his body to the Matrix power plant. Switch's last words as she realized the horror of her fate, kneeling over the body of Apoc, were "Not like this... not like this." This combined with the fact that she was the only person to show their distress when he was killed could hint she had romantic feelings for Apoc.