I hope you are editing the Flash, not just some exported PNG sequence. Otherwise it would be hard to integrate that back into the game.
I've took second look and it seems like I've got confused by editor unfamiliar to me.
I haven't time to do anything with HTH so far.
I've took a half hour recently to somehow reuse Zoe standing sprite, abandoned in the official archive never used in the game.
I've created naked version by adding slit and nipples.
Should I use that for dialog sprite and maybe replace her mediocre sitting sprite on some spots?
[EDIT: File attachment removed]