I made an edit with more normal proportions of the second to last image. (Thanks Runeterra for posting the hq images, they're a lot better to work with) I also changed a bit of the dialog (Mostly removing her name and making him not call her a whore), if you like the original dialog there's a version with that too.
Should I post more of these if I make more?
The slowness is only partially why it looks bad. Every frame has the same delay, which is a big no-no in animation 101, can't blame Shiin much though since he only ever does animations like twice to thrice a year. The one frame where her legs are pushed to the side also looks pretty bad when it's sped up.