Is she just under psychic attack by the man who has been seeking to harm her for 18 years? Is he summoning spirit meddlers to attack her?

This man has pursued her across lifetimes. There is a large amount of bad blood between the two, with a complicated relationship that has played out, causing harm to both. He is now seeking retribution directly, in the current life, and indeed is carrying out high-level psychic attacks as is consistent with her story. This involves both direct energy assaults, as well as the summoning of dark spirits to attack her viciously with the intent to cause severe harm.