Make the first sentence usable
Lead with the reason for writing so the recipient does not have to decode a long emotional introduction. For a message about how to apologize for interrupting someone repeatedly, use this factual base: name the exact action, the inconvenience it caused, and what you understand now.
Reduce the work of responding
Offer simple options, a narrow question, or a clear update that can be understood without another conversation. Offer the smallest useful repair and give a realistic time for completing it. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Respect the boundary already visible
Do not inflate the apology, fish for reassurance, or demand immediate forgiveness. If the person has asked for no contact, repair what you can without sending another message. A block, explicit refusal, legal restriction, or safety plan takes priority over the desire to explain more.