I think you should however give her at least two posts not condensed a day as a condensed post does not have a notification quite the same on the board and is less likely to be read.
I've ignored topics that got actual traffic, kept up ones from days where she didn't make many, and don't plan to hide it until it's had at least 24 hours of life.
This is a trial run, it can be ended or adjusted.How long is the trial run going to last?
It's basically fading on it's own over how she's posting within reasonable limits.
As for when the other topics could be unhidden, potentially whenever.