Born in October 1885 in Kadinov, White Russia, where she remained for ten years and learned Hebrew and "High German" with a rabbi's wife. With her mother -- reading the siddur. With her father, the writer and mashkhil (cultured, enlightened person) Kalman, and with a city teacher, received her first knowledge in Russian. For a year's time she learned in Vinnitsa, later in Mohilev, where she attended the Russian-Christian folkshul. At the age of fourteen she arrived in Minsk, where she for a short time was an employee in a store, then for several years she worked as a tailor, at the same time further learning, and after giving up tailoring, she getsoygn khyunh for giving Russian lessons. Undergoing, as an extern, the gymnasium exams in Minsk, and farkerndik in this Yiddish literary circle, she became known to, and in 1904 in Otvotsk, married writer David Kasel.

After 1902 R. debuted with a skit in Russian in the Minsk Russian newspaper. In Yiddish there debuted "Dos yudishe vort", under the direction of her brother Avraham Reyzen. Since then there was published in the Yiddish periodical many original skits, stories and songs and translated many works, most of the time from Russian authors [literary activity, see details in her brother Zalmen's "Lexicon of Yiddish literature"].

With the outbreak of the First World War, she left Warsaw, where she had lived since 1908, further settling in Minsk, worked in a social anshteltn tsu bazorgn the army, and form 1916 until 1921