Campbell
Relaxed Intensity
Problem is, the DM has goals too - be it a story she wants to tell, an adventure module she wants to run, whatever - that might not have much to do with your goal of setting up a teleport network nor the equally-non-adventuring goals of the other players/PCs.
Which, oddly enough, tangentially impacts the topic at hand: not only is there the 15-minute workday in the field, there can also be the 15-minute session at the table. By that, I mean you've got only a short time where everyone is on the same page and actually getting on with some adventuring as opposed to pursuing their own non-adventuring projects.
Why not? It's her campaign too...
This is an area where I feel more communication at the game table would be fruitful. Everyone playing has a responsibility to the rest of the table. If a character goal results in uninteresting play choose a goal that does result in interesting play that fits with what has already been established in play.