I agree that it would be better for you to go with what's been communicated to you and let her go with what the clinic tell her. You're entitled to be puzzled if you want to be but you're not allowing yourself to move forward - you're stopping yourself by keeping on picking at it. You've had a clear message that he's leaving and won't be working with you again, you've made contact in a couple of ways presumably with no response. He can't be at work just now, or have contact with clients - how long are you going to keep shaking the tree to see what falls out?

Yes, this ending is awful for you but honestly it's by no manner of means the worst thing he's done in his work with you. Which is why you're having such a hard time now but the longer you keep hanging in there, the longer it'll take you to heal.