((((((((dec))))))
You are definitely not crazy, and there is a perfectly logical explanation for what you experienced. It's actually a rather common occurrence among humans: it's called sleep paralysis. When we go into REM sleep, our minds are active, but our bodies are entirely paralyzed. Normally, conscious awareness of this paralysis is not pssoble because our conscious minds are pretty much "shut off."
However, sometimes, in between transition from waking to sleeping or vice versa, the conscious mind doesn't get "shut down." So you experience a total feeling of paralysis, and a feeling like you can't breathe. Accordingly, your brain is still trying to process things consciously, so you have vivid dreams and visions; and depending on latent fears, your mind creates visions that explain this 'inability' to breathe (you're not actually choking, it just feels that way because you can't control your breath). In past times, like the medeival era, people had visions such as succubi sitting on their chest and choking them. Today, some people hold that alien abduction is really just a modern succubus: a fearful hallucination dreamed up during sleep paralysis.
I know the experience is frightening, and you may want to investigate who this woman is and why you're afraid of her (when you're ready). But know that it is normal and very explainable.
I'm sorry if this message was a bit long; this is just a really fascinating topic for me, and I don't want you to feel like you're losing your mind or whatnot when you're experiencing something fairly common.
Hope this helped!
Take care,


J