Hi Dawn:
You are going to have to come up with some more information on the
Heische name. Do you have a copy of the wedding records, both civil
and church? There might be some information there.
Also, German families gave their children 2,3 and more given names.
Many times their first name was not used, as they were named after a
parent. You may not find her under Louisa. You will have to confirm
by DOB and father's name.
As for Anton Garbe, the LDS Family History Center has information
for for the Lutheran Church for the years 1853-1874. Those records
start after he left Germany, but may have some information of
interest.
[1]http://www.familysearch.org
Castle Garden has the following information.
[2]First name [3]Last name [4]Occupation [5]Age [6]Sex [7]Arrived
[8]Origin [9]Ship
ANT. [10]GARBE FARMER 22 M 11 Jun 1851 GERMANY CLARA
Gale