Sentence:  Don Huberto actually fell in love with his kinswoman, and had presumption enough to declare his passion ... The lady being a woman of discretion, instead of making a <WSD>discovery</WSD>, which might have been attended with melancholy consequences, reprimanded her relation with gentleness ... 
Meaning of the word marked with <WSD> tags:  An act of uncovering or revealing something; a revelation.