She remained, however, in correspondence with St. Jerome, who at her request wrote a treatise on the priesthood of Aaron and the priestly dress. At Rome, Fabiola united with the former senator Saint Pammachius in carrying out a great charitable undertaking; together they erected at Portus a large hospice for pilgrims coming to Rome. Fabiola also continued her usual personal labours in aid of the poor and sick until her death on 27 December of 399 or 400. Although Fabiola's practice of medicine was pragmatic in application, her legacy illustrates the involvement of early Christian women in the field of medicine.