So, this is pretty good. Nothing truly remarkable yet, it's too short for that, but a very decent foundation for something interesting. The visuals are pretty nice and the proportions you have in mind for the MC are absolutely up my alley. I also loved the sequence of the MC admiring herself. The game in general looks pretty polished.
Now on to ideas for the future. The transformation types presented are really good and I'm excited for the update in which the paths have different visual presentations. Just be careful not to overwork yourself with too many splitting branches.
I'm also curious whether transformation will remain a theme in future content, because our MC is already pretty huge. Will future updates have a slower, multi-stage growth system, will our MC remain at roughly this size or will she grow beyond even that? Either way, I am very excited to see where this is going. Keep up the good work!