This is an answer to the question, "Any possibility of a LoRA for her?"
Weight: 0.8
Trigger + Appearance: steamdeck, twintails
Default Outfit: black dress, sailor dress, long sleeves, thighhighs
Add multicolored hair, black hair, green hair and green eyes if necessary. I only found 5 consistent images of Steam Deck-chan, and of course, it's from Merryweather Media.
The results of your generations are dependent on the additional LoRAs, weights, and models you use, so it may not work or come out as consistent as my sample images. Other reasons may include me using xformers, token merging, and a modified DPM++ 2M Karras sampler. You may sometimes notice that my prompt includes <lyco:. Note that some of my LoRA files are located within my LyCORIS folder. If the model is labeled as a LoRA, it's a simple LoRA. If it's specified as a LyCORIS, it's a LoCon/LoHa.