Welcome to this forum which is a supportive place with kind people.
I can feel your pain and confusion as you are feeling the potential loss of your girlfriend after 7 years.
I can understand that you have cared for her and supported her .
I wonder if you are able to sit down and have an honest talk with her so you can see what she is feeling.
Feel free to post here as much as you like.
Thanks for writing your post and sharing your story.