Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
hortātrix, īcis, f. [hortator], she that incites, encourages, or exhorts: blanda hortatrix voluptas, Pac. Trag. Fragm. v. 195 Rib.: gloria hortatrix animosi leti, Stat. Th. 9, 717: illa velut hortatrix manus, Quint. 11, 3, 103.