Moments after Raven's arrival at the castle, he was guided by a guard directly to Milo's chambers. The king couldn't risk having him meet his mother first, after all, if he did, that would ruin their plans to manipulate Maria. Even the fact that Raven was back had been known to Milo for a while, but given his mother's eccentricity, he'd given it every effort to keep that fact away from her.
"At the start, I hid the news of your arrival simply because I know how excited my sister can be about meeting the hero, and now that you've changed places with that warrior, she'd been nagging everyone to take her to see you, " explaining his situation to Raven, Milo stood before him with Viola standing by his side. "But if Tia knew or even Maria, either one of them, the news would've gotten to the other's ears, and that would've been utter chaos."
