Is [name withheld] mentally unbalanced, and is it dangerous for me to work with her if she calls? If so, why?

She is not unbalanced so much as confused. She has many intuitive insights and has many yearnings for spiritual connections but is compromised, and being manipulated quite heavily by extraterrestrial psychics, and has been manipulated by spirit possession for many, many years to alter her thinking and her sensibilities. This has created many distortions, and this is still ongoing. The Protocol work is helpful but will not reverse things immediately. As long as she is under such a heavy degree of manipulation by the interlopers, it is unwise to interact with her on any basis, as this will be used to attempt manipulating you, and this you do not want to contend with. It is safest to keep a distance and include her with healing work and not become engaged directly through interacting.