I was seeing a T at the time, but did not tell her what I'd done until after I'd confessed to the police. There was a month between my actions and my coming clean. I had been very dissociated at the time - I was pretty dissociated most of the weeks afterwards as well....
I confessed when hospitalised - I told the psych nurse; she bought in the manager of the hostel I was living at and I had to tell him 'it was me'. I then had the police visit and charge me.
I think you're right in that you have talked about it before but not processed it. That will probably be the key to healing. It sounds like you have a great T whom you trust.
I would encourage you to 'talk about taking about it' if it will help. I find this invaluable when needing to tell my T things and am so fearful of rejection.
