She's running out of companies on her list. On the one hand what's been done so far is pretty anemic but on the other hand it doesn't help at all for her to appear unreasonable. The question now is if she really wants to go through with killing government officials.
If she hadn't made the sort of progress she has it wouldn't be a question. But she has, and killing government officials was always less likely to be effective and more likely to provoke backlash.
Just stopping without a message is an option but it feels like weakness. She can't repeat the same way to send a message either though.
Without the protective barrier of the print shop sending a physical letter is too risky so it'll need to be an email. The public library is out too if anyone managed to backtrack to there they'll have exploited the same vulnerabilities she did to setup monitoring.
Maybe a different library would work though...
It takes a couple days but she manages to get remote access to the network of a library in a small town in California and plants a variant on her previous program there. She erases her footprints as best she can and just in case she does all the actual network work on a second hand laptop she bought with cash. And she uses the internet of a few different cafes. It's... still way too risky but there's only so far she can go, so many precautions she's capable of taking.
Eventually an email makes it's way into a few publications' inboxes a day before she would have killed.
To whom it may concern,
I am the individual responsible for the Tomorrow Letter. I am glad to say that the companies on my list have all at least paid lip service to my demands. The governments have not but I am not unreasonable and I understand that any actions they take must be more covert so as to not appear weak.
For the moment, I am pausing my killings but please know that I will be watching. If those who made public statements renege on those commitments I will once more take up my grim task.
May tomorrow be better for us all.