For years I have been trying to find a anime scifi movie that I saw as a child. First and foremost, it is a movie. It is somewhat dark, maybe even towards horror but somewhat also adventurous. The main protagonist is a woman. A specific detail I recall that might help you identify this is that in a particular scene, this woman is isolated in a spaceship and there are odd things there, because first you see her I believe floating but asleep, and a scene later she has this weird headcrab (similar to Half-Life’s headcrab) on her face, but it looks more like a scrambled egg monster, really weird stuff.
That is all that I can sort of recall. I have seen this in Europe around 1992-1995 ish, but back then in Europe we usually had movies and anime etc that were considerably older (late 70s, 80s), that is why I suggested even late 70s, 80s to early 90s.
It was definitely dark, weird, had odd monsters like this headcrab thing that was suddenly on the girl’s head inside the space ship where she appeard to be completely alone.