I'm curious how you determined it was a female. I was reading a article on that. Here is some of it:
"For those of you wanting "a pair" of Ackies, or a "female" baby, you have to understand that
"monitors (of all types)" are not visually sexable as babies, and there is absolutely no way to guarantee a particular sex when you are selling babies. Anyone who tells you different is trying to deceive you. Sexual characteristics start showing up as early as six months old, and as late as a year. You can look for head shapes, body shapes, hemipenal bulges, and other factors when trying to determine sex, but it is all still educated guess work. Unless a male monitor plainly everts a
"hemipene" in your view, it is so very difficult to be sure of the sex of your animal (females will also evert a similar looking hemiclitoris, only confounding the situation). Some folks may have a "female" monitor for 3 years before it has suddenly everted a hemipene that wasn't thought to have existed in the first place."
Pic of Hemipene
The person who sold me mine said if it were a male He "Would show me"
If you'll notice in the picture the size of individual blades of grass, You can see this is obviously a mature animal.