FellOnBlackDays, I'm sorry that you find yourself in this place, but it sounds like something positive will result. From my experience, it starts slow (little baby steps). Her text/email is a good sign; she is telling you how to make contact. Your wife is probably scared. She doesn't know how you are going to react.
Follow the DB techniques and bring calm to your relationship.
After 28 days of no contact, I don't think a positive email to your wife is breaking any rules. Just don't ask her any questions. In her mind, you should already know her reasons for everything. I would start by telling her she made a good decision. Tell her that the time apart has been therapeutic and necessary. Tell her that you admire her strength. Don't argue; don't ask questions. Support her decisions (even if you don't agree). Build trust between you.
