
Hope you don't mind me popping in on the comments, but, as it's my breed, wanted to say that my gang get training like the Collies. Brain exercise!
Physical exercise can be overdone when the bones are still growing. And no running up and down stairs. Jumping off the settee is a big no. Even though they can do it! I knew someone whose Chi had a bad leg injury just from landing too hard.
I know that you said she is not tired at all, but I hardly think that's true. Personally, what you are seeing as "not tired" is what I see as over tired.
They are 100% companion animals, and that means having company. Don't ever expect a Chi to lie quiet for hours at a time in their beds. They want to be with you, and to interact with you. That's why they're bred as companions! And they love cuddle time. They are "needy" and that is something that I always impress on people.