I'm actually blown away by how well this works considering the lack of training data. It gets her features very well without prompting. Her outfit (the talbard specifically, only one I tried), is difficult to nail down and definitely has some messiness to it even when the AI generates it.
To be clear, if this were for a character who's more well known, I don't think I'd give this 5 stars, there's still issues, but this is also the best resource to make SD art of her right now.
Fun fact, as of this moment, this LoRA is the 2nd result on google I get if I search "Marle Barrock". Really shows there's not much of her out there right now.