Moreover,
1) On the 1900 Census for the Sam and Hattie. Rosenberg family, Hattie is listed as 6 born, 6 living - and 6 children are listed. There is no Frieda, and none that is likely her by a different name. Morover, the children were all born in Vermonf, and Sam is listed as having been in the US 18 years, Hattie for 15 years. So both since well before 1890.
But
2) On. Frieda's 1942 Death Record (per AncestryLibrary) her is-Birth Date: 4 Jun 1891 and she was born in Russia. -- On her 1913 Marriage Record she is age 23, Birthplace Berlin, Germany -- and on the 1917 Naturalization Petifion of her then husband Max Laskow she is listed as born in born in Kalisk Russia.-- Not 100% consistent, but clear she was not born in the US, and was born after Sam and Hattie (Siegel) Rosenberg were in the US.