Hi Kejun
I'm afraid my view on this is still the same. Even if you're working with a sponsor and you're up to amends, now might not be the best time for an amends, especially if she's asked you to leave her alone.
I'd run the letter by them too. To me an amends needs to be short, it needs to be focused, transparent and without justifications or excessive beating one's self up.
I know it's hard, and I understand that you want to fix things, but I honestly think you're better working on yourself and your recovery right now.
D