Family from Norway. Sailed on the Lusitania.

Hi. I am having a really hard time looking for my ancestors. My great- grandmother's name was Karen Ask (I do not know her maiden last name). My great grandfather's name was Haakon Ask. My great- grandmother's and great- grandfather's families were friends and that is how they met. My great- grandmother sailed over here on the Lusitania around 1912 and later Haakon came. If someone can help me find some info, it would be much appreciated. Thank you everybody, for taking the time to read this. I am the only one in my family doing genealogy because it is very interesting. I am only 19 years old, so I decided to start early. Hope to hear from someone soon.