... or is this just a family visit?

At the receding tide, Spica's ship left Duirt, with some trade goods for Lusre Island, as well as Professor Phillip Kadrai and his wife Anjal. They leave behind several questions though?

What was the purpose of all those meetings at the Ivory Tower? And is there another reason Phillip and Anjal are going there apart from visiting their daughter, Selene. Not even Melody knows, or if she does, she's not telling.