It could be:
Keila as a creative spelling of
KayleyKeila as the Yiddish form of
CarolineKeila as the Yiddish form of
Cecile,
Celia,
Cecilia...
Keila as the pet form of Kelilah ('crown of laurel' in Hebrew)
Keila as a variation of Gella / Gela ('blond' in Yiddish)
Keila as a variation of Geila ('French, Gaul' in Old
German)
Only you can know, according to your heritage. :)