Tā de míngzi jiào Jiǎnísi, shì jù zhōng de zhǔjué.
Her name is Janis, and she is the protagonist of the play.
Tips
usage
贾尼斯 is the standard transliteration of the English name Janis (as in Janis Joplin). It is a proper noun. Note that 贾 here is read jiǎ (a surname meaning 'merchant / Jia') purely for phonetic purposes.