Of course for such a high risk relationship it wouldn't have been a big deal to purchase 2 laptops that are only used for this particular communication and nothing else (no web surfing nothing, just to setup an email account to communicate with the other party). That way, no risk of auto complete and can avoid any other traces and be easily destroyed. Doesn't avoid any IP address matching but that can be handled in other ways.
Of course for such a high risk relationship it wouldn't have been a big deal to purchase 2 laptops that are only used for this particular communication and nothing else (no web surfing nothing, just to setup an email account to communicate with the other party). That way, no risk of auto complete and can avoid any other traces and be easily destroyed. Doesn't avoid any IP address matching but that can be handled in other ways.