It's been a bit of time so I don't remember everything for sure...
But I'd been running her for maybe 60-90 minutes at most, with the only other things open (besides just web browsers of Firefox and Microsoft Edge), being Word, Excel, Modrinth, and Discord, during which time I spent the majority of the time (after the first ten minutes just admiring and having fun) exploring the crafting recipes and seeing what could be done.
Also that, I closed her down (by opening the tab mini window at the bottom and clicking the X, not by opening the settings window thing). The next day, she has the black boxes. That's about it I think. Sorry it's a bit vague.