If Ver weren't a princess, she would want to marry Carlo. If she weren't a princess, and Glen weren't a knight... It's obvious that she loves Glen the same way he loves her. But she is a princess, therefore, she doesn't have freedom. She can't even cry for herself, until everything is destroyed, she no longer have a home, a castle, her people, everything is destroyed by Eugene. So in a way, Eugene helps her to finally found freedom.
I don't think she love Eugene, since the first free-will emotion of her is hatred. Eugene might love her though, since he do want her to run away with the person she loves.