She's free to make the change of course but the reasons would be so unclear... If I'm right, she has been training in Croatia for less than a year now, and I don't think she lacks money (especially after a pretty good 2013 season). Also, I don't think she has Croatian roots.
But, well... On the other hand I remember she said last year that she wouldn't play the Polish Championships anymore. Hopefully that wasn't another sign of this probable and mysterious switch