I had a terrible time trying to find several relatives in manifests. In one case, my aunt's name was reversed!  So try searching for her last name in the given name area. In another manifest, my grandmother, Bacie Siberdi, was listed at "Basic Liberty."  I have no idea how they got that so wrong...they also listed her (in the index) as being from Germany, even though it said on the manifest that she was from Romania.  I found the manifest using the wold card (*) for the first letter of her given and family names.
Don't give up!

Karen Sanders
West Haven, CT