When I google "emancipated minors" or "emancipation of minors" with Victorian or history, I get references to modern day emancipation or to historical events like the Catholic Emancipation. So -- was emancipation practiced in the Victorian era?
It's going to be a legal fiction: some people were artificially created in the form of adults, but lacking experience to manage as such. The state will declare them wards of the state because they are minors. Once they can cope, in fewer years that it would take to "grow up", they will be declared emancipated minors -- if that was a practice. I will have to invent a different fiction if not.