If she has sensory issues, a new environment like that can really be overwhelming with new information. Liking it and getting "spent" processing all of it are 2 different things. New places and people really exhaust my son.... Even switching to homeschool, which he heavily advocated for, hit this point for us. After the first day I saw that letting him chose was a problem because he overdid it and was a mess by late afternoon. He was just so excited to get to learn and did too much.