If you are a descendant of Gerszon and Peszia KREMERMAN / KRAEMERMAN / KRÄMERMAN

You will be able to visit their graves in Lubaczow.

Gerszon Gerschon KREMERMAN / KRAEMERMAN / KRÄMERMAN died in 1932.

http://jewishcemeterylubaczow2015.blogspot.no/2015/02/row-2-grave-8-gerszon-kraemerman.html

His first wife Pesia Pesza nee BRYNER / BRUNER died in 1915.

http://jewishcemeterylubaczow2015.blogspot.no/2015/03/row-20-grave-49-pesia-kramerman-nee.html

What happened to his second wife Serka , the mother of Reisze Ryze, a daughter born in 1917?

There is a page of Testimony for the daughter, but not for Serka KRÄMERMAN.

Serka was the daughter of Izak ROTH and Syma SINGER.
She had first been married to Wolf LUFT from Rawa Ruska.
According to JRI Poland Wolf and Serka had a son named Szyja LUFT ROTH r SINGER in 1903 in Mosciska.  What happened to this son is not known.
It is not clear if Wolf LUFT died during WWI, but it is likely that Serka  as a widow, married  the widower  Gerszon Gershon KRÄMERMAN KRAMERMAN  who had lost his wife  Pesia in 1915.
It is also likely that Gershon and Serka married with a rabbi in 1916. Their daughter Ryze Reisze was born in 1917.
In 1917 most of Gershon's children would have been in their twenties.