If you aren't sure what your T would do, you can always take the approach I did with mine when a questionable subject came up that I wanted to discuss. I would put it in the form of a hypothetical. "What if I said..." "How would you react if..." This gives you the chance to speak 'off record' and play out scenarios, what you don't want to happen and so forth. It also gives the T a chance to explain what they are required by law to do and how that process works, so the two of you can discuss things. In the 8 years of working with my T, we have gotten through cutting, suicide alerts, and self-medication incidences without having to call in emergency contacts or the police.