I see this article is from the UK. here in america this is old news, its one of the reasons why treatment providers here make sure their clients are stable and have all the self nurturing tools to maintain their present day to day living while at the same time use tools like grounding, relaxation, breathing and other therapeutic techniques before delving into harder topics, problems and issues. they dont want their clients to end up stuck in the past memories that suddenly come to the surface and end up suicidal or self injuring.