Louise Koch

I am looking for information on Louise Koch. She arrived in New York aboard the Mozart in Jul 1842 with her father Heine Koch and two sisters, Elisabeth and Anna Catherine. She married John Michael Scharf in Hardin Co., OH and lived there until her death. Louise was born in Saxony on Jan 1827. I have census information from 1850 to her death but am looking for older records. Any help would be appreciated!