Yeah the whole time abyss thing going on makes it a bit fuzzy just how quickly things are getting done. I mean Mamoru will definitely put the skeletons to work mining and excavating as soon as she has the clearance, but so far I haven't actually done that yet. Just as well everything I did have Mamoru do happened on Day 1: if there's been a considerable time skip or something already, than her clones have also likely already reached various locations around and have been feeding Mamoru information on top of the resources she's gathering via the skeletal servants. Again, all of this is background stuff going on, but I'm not entirely certain just how much of it is/can happen in our current time vacuum.