Thank you very much for the kind words! And you don't need to support me monetarily ^^ I'm happy just knowing you enjoy the game so much.
Because I don't live in the US, it's harder for me to set up and run a Patreon — especially regarding taxes as a non-US resident and providing additional information, complying with Patreon's (and other countries) guidelines for adult content, and how time-consuming it all is for one person to manage on their own — so I can't offer that as an alternative payment method, unfortunately ;n; Patreon also isn't exactly a gaming storefront (like Itch or Steam), so it's harder to process refunds and revoke download keys, update the game files, and share downloads/links without them getting leaked. And I'm aware that this is already happening, but I prefer to minimise the risk rather than add to it.
With that being said, I think you'll (unfortunately) have to wait until the DLC is available on Steam to purchase it ^^; It's likely going to take some time due to how publishing games on Steam works, but hopefully it shouldn't be too long!
Thanks again for the kind words and support ♡ It truly means a lot to me!!