Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
conservātrix, īcis, f. [conservator], she who preserves, defends (post-class.): conservatrices et nutrices ignis, Arn. 4, p. 151.
As an epithet of Juno, Inscr. Grut. 25, 2 al.; cf. conservator; and of industrious housewives, Inscr. Orell. 4930 al.: bonorum principum clementia conservatrix thensaurorum, Treb. Poll. Trig. Syr. 30, 16 (but the best reading, Cic. Fin. 5, 9, 26, is servatricem; cf. Madv. N. cr.).