After I posted that, I was looking thru the kids profiles and saw they were all Wrexler in the 1900 census, so the parent's death date is probably before 1900.
However there are discrepancies on the 1900 census data as well, on Cecelia"s profile, age 6, she is listed as the daughter of Sarah and the 'sister' of all the others, real Wexlers as well as her presumed real brothers and sisters. Note the real Wexler kids are listed as born in Russia, but on the 1905 Census that has morphed to Romania. Also, you haven't listed the 1900 Census on Samuel's profile, but he is there. It lists his, and his Wexler parents as imigrating in 1890 from Russia, his birthplace- you have listed NY. On the census, Sarah is listed as having the number of children who are on the census.
Samuel lists his mother as partially dependent on his 1917 WWI draft reg card, again pointing to Sarah as 'mother'.
I'm thinking you should enter Wexler profiles and see if you can track anything there, especially concerning Sarah and the 1890 immigration.