My T asks me this any time I express suicidal ideation, overwhelming depression, etc. Ts have to make these assessments. When you are in their office, they are the ones responsible to make the judgement about whether or not you are safe enough to leave. Also, if you are not in immediate danger in which you would need to be involuntarily committed, it is still their responsbility to ask you about voluntary committment when you are having destructive thoughts/feelings.