Perhaps your T is allowing you to find your own personal resources to learn to cope. Our T's can't always rescue us. They can't literally be there 24/7. She isn't being mean. She simply can't work with you right now -- for whatever reason. She could be involved in a myriad of things that require her attention today -- her day off.

Not going to school has left you alone to stew in your juices rather than being somewhere that could at least keep you distracted from "you" for a few hours. So, rather than sit there and stew. Go to school if the day isn't over; attend the rest of your classes. Or, pick out some good movies to watch. Or, go for a long walk to burn off that excess energy and agitation. You CAN find ways to cope right now without your T having to do it for you. That is what you need to discover for yourself today.

This anxiety will pass soon enough if you don't feed it by staying isolated and telling yourself you have no ability to find a way to cope through this. It IS in your power to find healthy ways to get through what you are feeling right now, but you have to make the decision to purposefully find those ways.