Car accident with Artic lorry

My wife had an accident earlier in the week with an Artic, took her out of it changing lane, wrapped her car around the front of the cab and ended facing oncoming traffic on the M1. Somehow she came away from it with muscle pain. Truck driver said he didn't see her. She's taken off in an ambulance and Gardai take it from there. I'm looking for advice from people who've learnt from something similar and/or professionals. Car is a right off. Thanks in advance.