The two Oei sisters – as daughters of Oei's senior wife – lived with their father and were educated at home by a string of European tutors and governesses in Semarang, receiving a thoroughly modern upbringing by contemporary standards.
Dua bersaudari Oei – sebagai putri dari istri tua Oei – tinggal dengan ayah mereka dan dididik di rumah oleh sejumlah pengajar Eropa di Semarang, meraih pemahaman modern sesuai standar kontemporer.