It can feel this way when T's own private life becomes apparent. They get to have their own lives and all that goes with it. And like us, they like to relax and rest sometimes. Like you have done - going to the beach, going on trips, etc.

It's hard but you can talk to her (or not talk to her ...) when she comes back. You can feel all the feelings you have about it too, and it would be another great thing to talk about with her!