Hmmmm aren't humans funny creatures !
Only my gut, but I have a feeling she's struggling with the 'at home' part. It's one thing to have extra curricular activities and then come home. It's quite another to bring those activities within the castle walls. There's just something about it. I don't know as I can explain exactly what it is. Sanctity ?
I seriously doubt is has anything actually to do with 'you'. I think she just sensing this discomfort - part maybe from you and part internal and is confused by it. And doesn't know how to handle it.
Probably just be nice if you could have a conversation - nothing intense, nothing confrontational. Just express your concern, and confusion too, and that you don't want to read between lines something that's not real.
You may discover that bringing things inside the castle walls is not something either or both of you are quite ready for yet. There may be stuff to process.
Check it out, proceed accordingly.