Maybe you would want to inform her about how you actually are? Sometimes a lot of therapy patients do tend to want to "not let their Ts down", so to speak, and act happier than they really are. It's important that your T knows that you still need her as she will definitely be there for you. You don't have to go through this alone!
I am also terminating in a month (and I haven't seen my T for 2 weeks) as I'm graduating. It sucks because there is no way out of it!