Not enough time at all. It takes a few minutes to warm up and work up the nerve to go into those topics and, if the T is competent and responsible, there needs to be time for grounding at the end. So that leaves a good 20-30 minutes (depending on how easy or hard it is to warm up some days) to deal with trauma.
I used to have really long appointments when I was her last one every week but now I'm in the middle of the day twice a week and it just doesn't work well.