It is common for parents to experience intense, trauma-related anxiety after a family medical crisis, often manifesting as a constant 'threat-scanning' mode where normal child behaviors feel like red flags. Instead of providing constant reassurance—which can inadvertently keep the anxiety-checking cycle alive—encourage your friend to seek professional support from a specialist in PPD and trauma. Practical, in-the-moment strategies like grounding techniques must be practiced proactively with a therapist to be effective, and remembering that 'permission to not be perfect' can help lower the pressure. Most importantly, remind her that she is not alone and that these experiences, while isolating, are a recognized part of navigating the post-trauma journey.