This was lovely!! Amazing!! Throughly enjoyed every second of thiiiissssss <3
So,, onto the actual thoughts
I was really impressed by the amount of custom shenanigans in this. It's obviously still a renpy game but you truly mangled that engine into your own vision. The clickable desktop icons, the chat log, emotes, and general ui/ux feels were unique, and fit the game well.
The general visual style was also lovely. Your art is adorable, and from a production standpoint you're also really efficient with the limited scope and assets to still make this feel fleshed out!
Lastly, your writing. HOLY SHIT dfhgjdfghb I love nova to bits- her teasing and general attitude are so fun and hit all the buttons for me. I was so sad when the demo ended because I want more of this!! so I'm really looking forward to future updates. The games you play with Nova felt unique and meaningful in their variations too, which helped Extort My Heart feel like it's a pliable and squishy thing that actually responds to your input (next to name and pronoun selections). (Like, there's many "choices matter" vns where you still very obviously see the pearlstringing. That didn't happen here!)
A small criticism I have is that the actual extortion never felt that... present? We get more days with Nova, but the actual forking over of money is never really given presence. Which makes this feel much more lighthearted (maybe intentional, maybe not?)
Overall, thank you for making this :3 Would get extorted by a goth girl that's mean to me again 10/10