I wouldn't be so quick to call it abandoned. He usually does not interact with his patrons and leaves everyone thinking he's abandoned this game between updates. Even with an announcement update he will still miss it and people will say he's abandoned it. It's just a guess, but I'd say it will come when it's ready. I quit waiting for this guy to update and just moved on to other things a long time ago. Since then he's had two updates. Doesn't help to have a negative outlook, but its equally important to be a realist. Best option, forget about this game and be notified if there is an update. Pleasantly surprised is better than expectantly disappointed. Besides, there are tons of better games on here currently and with much more support. Just stop thinking about Scarlett and you'll be fine.
P.S. People have been saying these things about this dev since I started the game back at ep5. Since then he's had 3 updates. I'd wager we will see another update whether it be sooner or later.