Really needs more possible endings (Massive spoilers below)
I find the ending incredibly unsatisfying, and the "Twist" just made me want to stop playing completely. I love bad endings when there's a way around them, but it's just nothing here. Two proposed endings I have are:
Broken Hearts: Requires you to obtain Twyla's heart somehow so that when she attacks you you're able to fight back and can break hearts like you were planning to.
Sweet Hearts: If you do everything you can in "The Night Before" to try and mitigate their suffering, perhaps there can be some sort of good ending where vanilla can break no hearts without being stabbed by owl lady, maybe even going against their father.
Either of these endings would have been much more satisfying and interesting than what we got, which is just anticlimactic in an attempt to be "Surprising". Just because something's unexpected doesn't make it satisfying.