Where did anyone suggest that a child get “therapy” for any statement he makes, whimsical or not?
This:
Instead of emphasizing what she can’t do, try to figure out why she wants to be a Rabbi, and help to find ways she CAN do those things in a kosher way. It is possible.
The kid said something. No need to make a discussion about it if they didn’t ask for it. If it becomes a recurring theme then there’s what to talk about.