@Claith @Chrisis
I don't know about the Guild Boss because people from that world seem to be very close minded to new things, he could have tryed to revese engeneering it or something for example but even Frida said she had never even thought of the possibility of making one herself which should have indicated that the idea of trying to learn to make one is not something they can come up with. Another example of this is the lady that makes the cakes not thinking about trying something other than following the original recipt for the cake untill she was told of the possibility.
Because of that I don't believe anyone has ever thought of trying to learn to make the artefact themselves before the Mc said it.
About the magic use, it happened 3 times, not counting the times she controlled her mana to stop the consuming, the two you said and once in her house. Anyway the time in the forest just shows that it is possible to send the mana to outside the body without an artefact or seed to suck it out.