I would probably introduce the female into the cage and let her settle in, make sure you have 2 good basking sites for a pair so there is little problem for them to get some distance between themselves and bask at the same time. And have a good nesting box with a good range of temps into the substrate. I had a female V. Kordensis and a Male V.Prasinus together, and keep in mind they use to be one in the same species not to long ago and the Kordensis was referred to as the fish net pattern GTM. As I am not a fan of mixing species however I was shipped a Kordensis instead of a GTM female and had no choice for a short time anyway. The pair did copulate and the female did lay one egg on 2 occasions but not in her nest box and the eggs were not any good. The big thing about the GTM females is they get really aggressive toward the male after laying eggs. I noticed this on both occasions and couldn't believe my eyes. I first heard some rustling in the cage and what I observed with the female was she was pursuing the male who was hiding or trying to hide under some cork flats. I spoke to Mike S. who had the same experience with black tree monitors, I took his advice and pulled the male for 2-3 weeks and reintroduced him and they were fine until 6 months later when another egg was discovered. The reason I would first let the female get settled in is to give her time to adjust and discover the nest box, females get the raw deal of having to form and lay eggs in an environment that is not natural to them so I would think there stress levels are at greater risk. Males are happy campers with food,heat,water and some hides. Good luck, they are a cool species and if you can get some babies to work with they get dog tame. There is a video on youtube.com that shows a very tame specimen actually following its keeper all around the house and even outdoors, very amazing to see.
Bob
