By taking the 5th and burying the computer no one really knows what actual Email address she used for these critical communications. It could well be something other than a government provide address. There are endless free accounts available.
What needs to happen is the IP address of her office/computer needs to be searched at all the free Email hosting companies and find all the Email addresses used by her/office. If found then all the Emails and who they were with can be found too.
Not with NAT-ed addresses they won't. Not likely.
Interesting proposition. But, aren’t there a lot of private sector email providers, both free and paid? Too many to search?
Just ask the Koch brothers or some other deep pockets conservatives to offer a $1 million reward for a “forensic IT solution” to the problem.
$1 million, tax free, of course, anonymously and a Mossad managed witness protection program safe haven.
Any patriotic IT sleuths with backbone and .... um... the cajones?