Can't finish her route yet. Hopefully in next release!
Honestly, there's no way to explain without going into what it takes to be a solo indie dev, and it's an extremely longwinded discussion that I don't really want to get into. Like, I get that you're likely coming from the perspective of someone who just plays the game and doesn't know what goes into making it. Just Google questions like 'why do games get delayed so often', and 'what goes into making a game'. I guarantee you the answers you find there apply to me, and literally every other game dev with very few exceptions.
Anyways, for you, I think it'll be better if you just play every other release instead of every release if you want to be able to sit down and enjoy a lot of content at once.