I suspect she is being told by others on the left/ progressive spectrum that these threats exist. These include well known sources such as NYT and WaPo. I doubt she ever interacts with conservative media or podcasts to verify that the allegations are accurate. An echo chamber effect ramping up fear of opposing viewpoints. Histrionic thinking as a lifestyle. In her real life has any event occurred denying her or her Hispanic spouse any routine daily activities? This might be the starting point for a discussion. Acknowledge that she has fear, but try to identify the origin of these feelings and there connections (or not) to actual personal experiences.