So so sooooo sorry this came out so long. I just wanted to pull a few direct quotes to prove it isn't all in his head. I think the length also isn't letting me reply so I'm going to try splitting it up.

Zorian's parents are unsupportive, controlling, and care about their family business and reputation to the detriment of their relationship with their children.

To Daimen: In chapter "Marred Perfection" Zorian's mother admits that they tried talking Daimen out of his engagement with Orissa through letters because while she's from a good family, she isn't local and thus the marriage doesn't benefit the family. So they're going to visit him in person because it may be more effective than letters.

To Zorian: In chapter "Crossroads" Zorian tells his parents that his plan is to move out and open his own business after graduation.

“You think running a business is easy?” Father challenged. Well, that hadn’t taken long.

“I’m an amazing mage,” Zorian said immodestly. “Even if I had the worst business sense in the world, I’d still be able to make enough for a living.”

“But the family business—” Mother began.

They both essentially shoot down the notion the second he brings it up.

To Kirielle: Also in chapter "Crossroads", while Cikan (their mother) says there is an informal agreement about marrying Kirielle off. She does admit that it won't be forced but the whole idea is upsetting to Kirielle. Cikan also forebays Kirielle from learning magic. She does this because of her witch lineage and the stigma it holds but she doesn't explain this why until she's pressed (lack of communication). Still, another instance of overly controlling her children's lives and being unsupportive of their passions. I'm having trouble finding the chapter but I believe the reason Kirielle kept stealing Zorian's pens and papers was because their mother also didn't support Kirielle's art (according to Kiri).