Luth/Nehlsen

I am trying to find information about my grandmother .She died in WW11.
I think she was living in Hamburg Germany. She came from

Schleswig-Holstein .
Her name was Ida Freieda Dorothea (Luth) Nehlsen.
Can not find any living relatives or any information at all.
My father Willi Nehlsen came to this country(USA) in 1928. His father Willi August Nehlsen came before him to the USA,can not find a year.
Any help will be very welcome.
Barbara (Nehlsen) Wilkenshoff

Wilkenshoff family came from the Hanover germany area