Context:

Marie is Dieter's older sister, the favorite of the family. She's a strong "alpha", independent, and can throw it back as much as she takes it. As the eldest she is acutely aware of the fact that the rest of her family doesn't care for her brother, but she does, despite Dieter's rough exterior. They haven't always gotten along, and Marie's distance from Dieter and his life has only made things worse. Marie also carries the same inappropriate sense of humor, as Dieter, and uses it against him. 

Role:

She plays a big supporting role in Episode 5, a lot of lines, and she will be a reoccurring character in the future. 

Note:

If you do know any German, all the more reason to apply! I was thinking of optionally adding some German curse words into the mix, but since Dieter and Marie grew up in "Sim" America, they have North American accents.