but there seem to be residual emails in her inbox on some group emails on multiple devises. I spent time going through and deleting the rest as best as I could
So let me get this straight, you are deleting her emails from her accounts? That's very controlling even if she said OK. Wow.
This struck me as odd as well. I get it that she needs to rebuild trust. An I get that she needs to go no contact with OM.
But theres only so far you can go. Im sure she KNOWS his email address - so what use is there in deleting old group emails?