If she's stalking Eridan by night, Ros could notice that somehow? That would be likely to make her demand some sort of explanation as to what the deal is with them because seriously what first he tells me you killed them then you help heal him on the battlefield then you seem to be fairly decent what's going on!

Also Ros can do minimal encryption! We're definitely talking minimal, anyone who's put any effort into learning computer things can probably break them with some time. But what she knows she can definitely pass onto Kanaya.

LMAO she's too old for you kanaya!!