Hi there, Laura.
I ran this by Hanneke this morning, and she literally said that either way is fine – no right or wrong way to do it in her opinion.
I can tell you that occasionally in the Texas style & Old-Time styles of fiddling, players will end a tune on the relative minor…e.g. Em out of G.
I’m not sure what the origin of this tradition is, but it’s certainly acceptable as long as you and your accompanist(s) are on the same page.
So for what it’s worth, you have two instructors saying that you should take whatever approach you wish…any other folks out there want to chime in on this one??
C