You have done a nice job making that enclosure very attractive! The tegu is gorgeous as well! Congrats!
Now all you have to do is make a new enclosure that will fit about four of that one inside it! It is waaaaaaay too small for her. 6x3x3 at least and 8x4 being optimal.
A lizard (especially ones as active as monitors and tegus) should not be housed in enclosures where their nose touches one end and the tail tip is only inches from the other end. Stick with your current design (I really like the sides and back), provide lots of substrate and make it huge! She'll have a great life then.
Chris