Actually, I was wondering if I could make a change to this Echo. I was mulling over how to get Vanessa's powers to show up and I realized there was an obvious and much quicker way to do it as opposed to Echoing back a power and then Echoing back which metal fuels it or vice versa.

In Mistborn an Allomancer first gains their powers by "snapping." Basically what happens is when they're put into lethal danger their Allomancy gene or whatever triggers and they gain their powers. I can't really canon-parallel this since Vin almost died so many times growing up even she doesn't know when she actually snapped but I was thinking the fungus creature event could toss her into a nearly fatal situation and she'd Echo back her snap, triggering all her powers in one go albeit still at a limited level.

This wouldn't change much since she still has to Echo back the memories of what these powers are and what metal fuels them, and she'd still only use steel for awhile since that's the only one she knows at the moment. All it would really do is remove a step in how I was originally going to have her recover her powers and free up a bunch of Echoes for memories, character traits and skill/power boosts.

Thanks!