DDJ, this is how Wonka suggested I respond to my W when she sent me a similar message asking me what I want her to do.
Thank you for your message. It's not that simple. Please understand that trust is broken and you're going have to do a lot more than just words to earn my trust again. Your actions and behavior have been very hurtful for us, the marriage, and our family."
As for moving back in the MBR, I personally would wait on that, wait until you believe she is sorry and is committed to working on u2... If you like being in there alone, just tell her that it's a big step to share the marital bed and I think we should wait a little while and see how things go sharing the house first.
M - 9 1/2 years 5/5/16 - Bomb drop - 3 week EA 10/31/16 - We sold house 01/10/18 - D Finalized