This is a model of Celestia from Strinova. The model is fully trained on screenshots from the game using the default outfit. I may work on adding the additional outfits at a later date.
The main trigger words are "1girl, celestia". I would also recommend using "pantyhose, asymmetrical sleeves, fingerless gloves" as they help ensure the fine details are present.
The model is also trained with the default rifle Celestia wields (use trigger words: "rifle, holding gun"), and is also slightly trained with the pistol Athena (not too much data, trigger word "pistol")