Heroine

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mid 17th century (in the sense ‘demigoddess, venerated woman’): from French héroïne or Latin heroina, from Greek hērōinē, feminine of hērōs ‘hero’.

wiktionary

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Via Latin herōīna from late Ancient Greek ἡρωΐνη(hērōḯnē) (2nd century), a feminine equivalent of ἥρως(hḗrōs, “hero, demigod”), equivalent to hero +‎ -ine.

etymonline

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heroine (n.)

1650s, "demigoddess," from Latin heroine, heroina (plural heroinae) "a female hero, a demigoddess" (such as Medea), from Greek hērōine, fem. of hērōs (see hero (n.1)). Meaning "heroic woman, woman distinguished by exalted courage or noble achievements" is from 1660s. Sense of "principal female character in a drama, poem, etc." is from 1715.