The index card is a duplicate of the information on the manifest
https://www.ancestry.com/interactive/1075/m1464_368-0714?pid=5987201&backurl=https://search.ancestry.com/cgi-bin/sse.dll?indiv%3D1%26dbid%3D1075%26h%3D5987201%26tid%3D%26pid%3D%26usePUB%3Dtrue%26_phsrc%3DFPl2871%26_phstart%3DsuccessSource&treeid=&personid=&hintid=&usePUB=true&_phsrc=FPl2871&_phstart=successSource&usePUBJs=true&_ga=2.122149195.1370438784.1594562809-1207326651.1583011107
see all 3 pages of the manifest.
It seems Fanny was in the US from 1912 to Dec 1918, then went to Montreal for a few months, perhaps visiting someone, then on 10 May 1919 she was "examined" for returning permanently to the US. Some of the earlier pages have names of ships, but her page does not.  I don't know what a class C vs a class B alien might be. 

Familysearch has a much sharper copy of the alien manifest
https://www.familysearch.org/ark:/61903/1:1:QKQS-DYB9
as well as an additional index card
https://www.familysearch.org/ark:/61903/1:1:QK31-KC4V

You can search Montreal city directories on Stevemorse.  The 1918 and 1919 city directory at 198 Fifth only lists Jesse Ash