Changing mind re activities ?

So last fall I enrolled DD in a local dance class where it was a combo ballet and tap.  She had really enjoyed dance at her daycare and we figured we'd rather spend the money somewhere she learned a bit more.  It was a great class with combo tap and ballet.  She really loved it at first but by the end of November, didn't want to go, which surprised me as I thought she loved it.  I made her finish the last two classes, including the open-house performance, but told her after that if she wanted to quit, we could.  She said she did, very adamantly, and only wanted to swim (we had just started swimming).  I told her she could do both but nope, only wanted swimming.  So I cancelled her enrollment and we've just been doing swimming since January.  I actually moved her class to an earlier time slot in February as we no longer had to jump between the two. 

Problem.  Due to my poor planning (i.e. I didn't take the shoes and sell them or hide them), she found her dance shoes.  She has now declared she wants to go to the dance class with the tap and she didn't mean to drop out.  I told her that she made the decision to drop in December, it was too late to enroll her (probably true given their big spring show is coming up in May I think) and also now her swim class was at a different time, there would be a conflict.  I told her if she still wanted to dance come the summer session, we would see about enrolling her again.  I wouldn't be surprised if she wants to dance again, and wouldn't be surprised if she didn't.

Anyone else deal with this kind of in-out, in-out business?  How did you handle it?  Thoughts?  TIA!