It is disconcerting when somebody knows something about your personal history which you do not. On the other hand, people are often reluctant to discuss emotionally upsetting or traumatic events.
Your episodes must have been very painful and frightening for your parents, regardless of their religious beliefs. Perhaps there will come a time when they are more comfortable discussing the matter. It would probably hasten the day if you were open with them and tell them frankly how important it is to you to know more about this "blank page" in your personal history.
You write from the United States. As a matter of law, you have a right to examine your medical records. Apart from the legal situation, your parents may cooperate in your talking things over with the physician, including his or her discussing with you what they reported. That may be easier for your parents than discussing it themselves, or your suggesting the possibility may serve as an "ice-breaker" to bring the topic into the light.
I believe I can help with one part of your report
QUOTE
i would mutter in what she thought was a foreign language, though to this day i only know english.
We have "detectors" in our nervous system for a variety of environmental features. For example, our attention is drawn to faces, whether of people, animals, minimal drawings of faces, like "smilies,"

, or even accidental configurations on grilled cheese sandwiches. The detectors "fire" when something is "close enough" to a face, whether it is a face or not.
A common kind of "detector" is for the distinctive patterning of sound in language production. If you walked down the street, and passed two people conversing in Turkish, you would not know what they were saying, you probably would not know it was Turkish, but you would sense that it was human language. That would be true even if all other cues were removed, and you just heard the sounds.
It is easy for a human being to make "speech like" sounds that are not genuine speech, but close enough to be (mis)recognized as language production. Take a six year-old English speaker to a subtitled Samurai movie. He doesn't speak Japanese, but on the way out of the theater, there is a good chance that he will have learned to make sounds that you recognize as "imitation Japanese."
If you don't speak Japanese either, then you may even find the resemblance eerie. But it is just that human beings are good at all aspects of language use. It is a distinctive skill of our species.
That is all that happened. It
is eerie, and the effect can be heightened if the sound maker is unconscious, and the event is known to be a precursor of other dramatic behavior. If you add further personal beliefs that such things may be "signs of the Holy Spirit," or in the alternative "demonic attack," then the stage is set for a truly frightened reaction.
I am happy to hear that your sleep disorder itself has gone away. I hope that your lingering "blank page" is filled in someday soon. In the meantime, I hope that what I have written is some help to you in understanding one small part of these events.