First off, I wish there was a School of Rock when I was a kid.
There was one point in my career where I got completely burned out of the IT field. I did something completely different for a while then I realized how much I missed it. I went back and was doubly enthusiastic about it since then. That was over 20 years ago.
Not to suggest that this has or will happen to Alizee regarding her singing, but leaving the door open to the chance that she just changed her mind. The day to day of the dance school might be a little dull and wants to have some variety.