It seems she was using a laptop. She is a sloppy computer user/internet user/email user prone to chatting about political actions via e-mail. This says to me she would take this laptop home sometimes and chat away on it there too
What was her private g-mail or yahoo account that she also used for “chatting”?
That’s probably what taking the 5th amendment is about.
Keeping a gmail/yahoo or equivalent Email address hidden. There are likely backups of those accounts that expose who she actually communicated with. Without the address it is all buried. But... By finding out what her home/office IP addresses were the various free online Email accounts could be searched to find all the accounts that used both those IP addresses.
And then it would be exposed.