I think BW Borealis is right. I don’t see your girlfriend behaviour as a response to a sense of entitlement, I see it more like an attempt to pick up some clue in order to know if she is important enough for you.
It doesn’t have why to be something rational, but it’s a way to have some sort of control within the confusion she lives in.
The more dependent she feels on their love people, the more frequent she is gonna experience these episodes and she is gonna also involve you.

I understand very well your needs and how much you suffer this situation. So, I would also wonder myself if it’s worthy to go on with the relation. Is there any clue that let you know that she understands her pattern and is she someway, working on it? It may be a great difference in one case and the other.
Good luck, both!