She first focused on concert singing in oratorios and lieder, and conducted choir and orchestra at a Musikgymnasium [de].

[1] She was appointed professor of music pedagogy, with a focus on conducting choirs and ensembles, at the Folkwang Hochschule in Essen in 1985.

She moved to the Hochschule für Musik, Theater und Medien Hannover where she also served as vice president for thirteen years, until her retirement in 2012.

She initiated the composition of music for choirs of limited voice range (gleichstimmige Chöre).

[2] With the Mädchenchor Hannover, Schröfel received prizes and awards at national and international competitions, such as Deutscher Chorwettbewerb [de], the EBU competition Let the Peoples Sing, the Internationaler Kammerchorwettbewerb Marktoberdorf and the Johannes-Brahms-Wettbewerb in Hamburg.