 In 1882 she met Arnold Janssen and worked as a kitchen maid at St. Michael Mission House in Steyl.In 1884, she was joined by Hendrina Stenmanns.Janssen perceived a need for female missionaries to complement the work of the male missionaries.On 8 December 1889 Stollenwerk became of postulant of a women's congregation established by Janssen, the Missionary Sisters Servants of the Holy Spirit, and on 17 January 1892 assumed the religious name "Maria Virgo".