I don't know what country you're from but at least here in the USA the things that therapists are required to report to police are pretty slim, mostly just things that could cause direct physical harm to yourself and others.
Beyond threats to hurt another person, threats to sexually assault another person, neglect of a child, or threats of harm to oneself... almost everything else is covered by HIPAA patient privacy rules.
If you live elsewhere perhaps you could look into your local laws in terms of what is required mandatory reporting for therapists?