Fat chance! Thinking eventually he will revisit her story to give her fans something to continue their Patreon subscriptions. Melody was just OK and Sunshine Love was a snoozefest, despite an attractive cast.
He used her (well, her character asset anyhow) in Sunshine Love and even hinted that you could rename her to "Dee" if you wished. So, no, he's not giving out his assets as he is still using them. He reused quite a few from DMD in Sunshine love. He likes to have cameos of them. Melody is mentioned in most of his games, usually as some famous singer. I love it when he does cameos like that.
Melody was a great game, one of his best in my humble opinion. Sunshine love was nice (I disabled incest), except for the main character thought bombs with his endless rambling in thought. I honestly felt that DMD was patently ridiculous, at least where the father marries his daughter and everyone seemingly has no problem with it. I understand it is just a game, based on fantasy, but that just seemed to cross a line I had a hard time with. Otherwise, nice characters.