BEING A PART

The arrival of Kailua to the wedding feast had been a real disaster.
 Who invited her to the feast? What if she comes with her entourage?
 Her entourages aren't the real problem, but Kailua. She has been called a witch for ages but not everyone knows whether it was true or not.
 She has been accused of many crimes but has never been caught as every evidence against her proved fatal.
 The bride, Doula, had been Kailua's friend since she was young. They hardly saw each other since a year ago, when Kailua's work became demanding.
 What is Kailua's work? Is she a witch?