What does Kalila mean?
An Arabic feminine name linked to the root kh-l-l behind khalil 'close friend, companion, beloved'. Sources give both 'beloved/sweetheart' and 'dear friend'; the 'friend' sense is the more literal core, so treat 'beloved' as the affectionate extension.
What does Sadia mean?
Sadia (سعدية, sa'diyya) comes from the Arabic root s-'-d ('happiness, good fortune', as in sa'ada) and means 'fortunate, lucky, blessed with happiness'. Also transliterated Saadia, Sadiya or Saadiya.