As of where there the series stands, none of Emma's relatives has been mentioned.
Emma sees Norman as a close friend and a brotherly figure. Being orphans of the Grace Field House, they have been close throughout their entire lives. Both parties cared deeply for the opposite's well-being and do not hesitate to save each other when one is in distress. Norman has stated that he "loves her" and will do anything to protect her. Emma and Norman are willing to sacrifice much for the others' sake, albeit not always initially, and have risked their lives more than once to help each other. After the event of the break-out, Emma has mentioned Norman several instances after her successful escape from the orphanage, and has stated that she will accomplish all of Norman's dreams when she succeeds going to the human world.
Emma and Ray are generally close friends. Emma sees Ray as a brotherly figure and often look up to him and showed a certain degree of respect for the latter. Despite the two's contrasting personalities —Ray's serious and well- reserved attitude and Emma's flightiness and optimism— which occasionally led to personality clashes, the two love each other regardless.
Emma and Gilda have been close throughout their lives. Emma sees Gilda as a sisterly figure and would go to great lengths to make sure they are safe. When Emma did something reckless, Gilda would tend to reprimand her. Emma trusts Gilda, and strongly believes she is not Izabella's spy when others believe so.
From birth till present, Emma sees her adoptive mother Izabella as one of the important figures in her life, and often likes to rely on her. However, this soon all changes when she discovers Izabella's true motive- to raise her and her fellow siblings to become food for the Demons. Izabella's image of a perfect mother soon shattered in Emma's eyes, and she now sees Izabella as nothing but a threat to her and her siblings.