Artemis as the sister of Apollo, is thea apollousa, that is, she as a female divinity represented the same idea that Apollo did as a male divinity.
ˈɑːɹɾɪmˌɪs æz ðə sˈɪstɚɹ ʌv ɐpˈɑːloʊ, ɪz θˈiə ɐpˈɑːlaʊsə, ðæt ˈɪz, ʃiː æz ɐ fˈiːmeɪl dᵻvˈɪnᵻɾi ɹˌɛpɹᵻzˈɛntᵻd ðə sˈeɪm aɪdˈiə ðæt ɐpˈɑːloʊ dˈɪd æz ɐ mˈeɪl dᵻvˈɪnᵻɾi.