Gretchen is one of the side characters from the Cartoon Network show Camp Lazlo. I have trained this with about 35 images in full 1080p from various episodes. Her hairstyle is pretty unique, so it might generate a different type of hairstyle sometimes. To help mitigate the issue put stuff like "long hair, bangs, hime cut, bob cut, wavy hair" in the negative prompts. If that still doesn't help, then increase the weight by .1 or .2 and that should help a bit more. Her eyes are also narrow a lot of the time and is naturally angry most of the time, so it might be hard to get different facial expressions if you have it at a higher weight.
Positive Prompts: GretchenCL, furry female, anthro, scalie, alligator, blonde hair, black eyebrows, black eyes, green body, green scales, back spikes, spiked tail, medium tail
For the outfit: dark-blue beret, blue topwear, scout uniform, plum shoes
For her dress outfit from the Miss Fru Fru episode: dark-blue beret, pink dress, puffy shoulders
With how she displays her teeth closed is a bit unique. If you want to show her teeth in full, then put "clenched teeth, sharp teeth." Otherwise, just put "sharp teeth" only if you want to display some of her teeth sticking out. If that doesn't work, then replace it with "fangs" intead.