Searching for Betty Levi family from Hessen Kassel in the 1800s #germany


I am trying to find the names of my great great grandmother's parents or siblings.  Betty Levi was born in 1837 in Hessen Kassel, but I don't know what township. She emigrated, possibly alone, to America in 1853 at the age of 16, and lived in both Baltimore and Cumberland, Maryland. She married Harmon White from Austria in 1866 and they raised their family in Cumberland, Maryland until separating in the late 1800s.  Betty died in Baltimore in 1913.  I would appreciate any suggestions for this search.
Joan Norris