In addition to what Bo found, here is one other possibility for Augusta from the Emibas CD:

Post 140784

Andersson Petersson, Augusta Matilda
Piga (unmarried woman)

b. 9/18/1863 in Fivelstad, Östergötlands län (Östergötland)

Emigrated 8/12/1892
from Klosterträdgården, Vadstena, Östergötlands län (Östergötland)
to Amerika

Source: Household Examination Roll, p. 217

Emibas migration file ID: Vadstena E 1892 011


Augusta traveled with this woman (a sister?):

Post 140783

Petersson Thorn, Johanna
Änka (widow)

b. 10/7/1840 in Fivelstad, Östergötlands län (Östergötland)

Emigrated 8/12/1892
from Gård Nr 162 B, Vadstena, Östergötlands län (Östergötland)
to Amerika

Source: Household Examination Roll, p. 597

Emibas migration file ID: Vadstena E 1892 010

Emibas returned only one Augusta born Sept 1863 who emigrated 1892 to North America. Something of a long shot since it depends on dates found in U.S. censuses (which are notorious for often being inaccurate).

You may also want to consider trying the resources of the Swenson Swedish Immigration Research Center. They have a huge archive of information about Swedish immigrants and have helped many break down their brick walls. Their website is here: http://www.augustana.edu/x13856.xml
Their database (archive catalog) is online but the archive materials are not. One has to visit in person or hire them to research for you. Might be worth it...

Jeff