Sorry I wasn't able to answer this sooner, I just noticed you tried asking on Patreon yesterday!
I did actually just add a secret command to accelerate this specific sequence in the new build that came out today! Pressing Enter + Middle click (the same that is used to skip cutscenes) once you get control of Vuu will increase her speed. Saves are not transferrable from V10 to V11, but I think it might be worth restarting for this one if you stopped there.
I'm glad you're enjoying it, and sorry you got stuck at that scene! I actually want to expand on the festival scene before that which will teach you how to use charged shots (hold right click), which is how you can defeat the monster. Charged shot at the head, attack while it's weakened, and so on.
If you really can't beat it, there is also a debug mode you can use. Debug mode is explained here https://www.patreon.com/posts/92141393
Basically, you'd have to toggle it on (left shift + enter + F2), press F9 in exploration, scroll up until #17, then click the scarecrow to activate that cutscene and continue from right after the fight. I would recommend toggling debug mode off after the cutscene.
So yeah, sorry about that, it will be improved in a future build! And thank you! ^^