What is the antagonist in Through the Looking Glass?

There is no 'villain', no 'bad guy' in Through the Looking Glass. The plot is structured as a series of events as Alice tries to make her way through the Looking-glass World from one end to the other. It is negotiating the strange land and its inhabitants which is Alice's main struggle, so, it could be suggested that the antagonist in Through the Looking Glassis the Looking-glass World itself.