Tia isn't playing around. Heads must begin to roll.
When the Duke becomes aware of everything, it'll be interesting. Tia already doesn't see herself worthy of his kindness, so she probably will be sad but expectant and then will probably mention the Saintess as his true suitor. The Duke already cares for her, he'll be disappointed but he'll still love her regardless and hopefully try to make her see her self worth and that she is allowed to be loved.
That's just a theory......
omgggg, I've been anticipating a spar since the beginning. (๑•ㅂ•)و✧