Joshua I know that its a bit confusing and scary to find out your core /body/birth person (here in my location this is called the host) is still there. you are not alone in this. let me show you something my location goes by and maybe that will explain what happened...

in my location it is believed and documented with mental health that human beings are born one whole person. then something traumatic happened when that one whole person was under the age of 5. that trauma was so extreme and severe that the human being (birth person) mind could not handle it. they use their dissociative skills (spacing out, numbing, daydreaming, shutting out, placing their self in what ever state of mind that enables them to not feel, not notice and not remember all the pain and emotions and events associated with those traumatic events) when this happens the under 5 year old mind dissociates into parts (alters). At that moment the mind creates the alters for a reason, to handle what ever the birth person could not handle. (here in my location this is called having alters who have their own way of being, their own jobs, purposes, reasons for being) from that day on any time there is a situation where the birth /body person gets triggered, the alters take control of the body and do their jobs, purposes, reasons for being....each system of birth/body person and those that reside with in that one body is comprised in such a way that enables all to survive and continue on living.

some systems with DID are where alters and hosts (body birth named person) is never around, in others the system is set up where the body birth named person is around part time and in other systems it may be that the body birth person is mostly around somewhere. (systems where the birth person is mostly around or always around is now called OSDD other specified dissociative disorder)

ok how does this relate to what you are going through.. it is normal for DID to be the way you and the others are. its part of having DID to have a birth named person who dissociated (in the birth named persons words according to you...she dreams) and the birth named person to perceive those that live inside her as being part of the dream.

here in my location a birth named person having awareness that the others exist either as a dream or voices, or thoughts is called co conscious. it may be that what ever caused your birth named person to dissociate/be gone so long has been resolved to where they can now feel safe in recognizing they have a dream world where things they dont remember happens, where there are others that she perceives as part of a dream. this is a very good thing, it shows progress and a great deal of healing has happened for everyone (birth person and insiders) great job everyone

now the next step in the healing process can begin... communication with those she is ready to communicate with, grounding, addressing the traumas that you all have gone through,.... in short you will all be feeling better in the future days to come.

my suggestion at this stage theres not much you can do other than continue to let her know you exist even if she perceives you as part of her dream. you can still say or think to her, hello my name is and here is how I have been helping to take care of you and all of us inside. She may not hear you at first but over time as she continues to heal what you say and think may reach her. continue to pay close attention to how she is thinking/talking and dealing with things. this will tell you what she needs you to do for her. as healing continues the communication/co consciousness skills between you may also progress to a healing point where she can tell you what she needs from you and you can talk with her too.

again great work everyone and congrats on this monumental step in healing