Well, I don´t know about your experience with rearing Myrmecia, so I just give you a larger answer.
As a semi-claustral queen she needs a foraging area with a nest in it. A test tube may work as a nest, but some Myrmecia don´t do well in them. Especially the larvae have sometimes problems to spin their cocoon on the smooth surface. Also, these ants need sand to cover their larvae with it for cocooning. The nest should be covered.
And it´s better to use only one box without any tubing or so. The outworld is the formicarium, so to speak. These ants are using their eyes for orientation, so they may have problems to find a second box connected with a tube. It´s better to keep it easy at the beginning.
Founding queens of Myrmecia need food for themselves and their larvae. They eat honey or sugar water and small insects. They need more insects when larvae are present. Soft bodied insects like flies, small spiders or termites are better for such small species.
I know that Myrmecia are like killer ants, but please, offer her only freshly killed insects. You don´t want a small cricket to find a nice juicy meal inside the ant nest.
Just wait for her to have a few workers to do the killing.
And some founding queens are a bit choosey, so just try different foods then.
That may be helpful as well: http://www.formicult...-for-beginners/