That could be something new. In the past, when checking Oriana's memories I've never seen her go to the Capital, it's always been Celandine who goes there. Oriana would always "meditate in the mountains" when it's her turn to be away from Silverpine for the day. She usually goes straight south from her house and doesn't use the road to leave the area. Which was always weird if she was going towards the mountains, why go south and not west?
Anyway, you might be right, but I know she doesn't like to go to loud/noisy places, or at least that's how the AI spins it when I asked if she goes there or why I never see her in Gareth's tavern.