UPDATE: Alright everyone, you can go ahead an duse the lora. I gave a multiple tests and images to se ehow it turned out. If you want the best result, apparently Moon beam is the way to go. Anything V5 is good too.
If you want Splash woman to have her mermaid design, please delete Human legs in the prompts. If you want her to have legs however, lower the weight down to 0.4 and make a prompt of her wearing pants, and you will have Splash Woman with Legs.
So have fun and hope you all enjoy making artwork with Splashwoman.