I understand your frustration, and I understand why you are frustrated. I think it is awesome you told your W how you were feeling. I'm going to guess that she deflected you, because she may have assumed that if she talked about it, she'd then have to assume responsibility for your feelings and somehow FIX it.
Keep in mind FOR WHOM you are keeping up your happy-go-lucky attitude. For you. Not her. If you keep it up for YOU... and NOT her... then she doesn't have as much power to alter it, either... unless you let her.
Now, having said that... it doesn't mean you are going to be in the rafters 24/7. What helps you get through it are the choices and decisions you make for yourself, because of how you are feeling... and not as a reaction to how you think SHE is making you feel.
Gives you a different perspective.
Hope that helps. Keep with it. It isn't easy... it WILL take some time.