I got a friend into Pathfinder less than a year ago. She had lots of fun. She had so much fun she decided to become a DM/GM. I was very excited about it.
Her grasp of the rules is terrible, but I told her I'd let her know if she got too far off course. That's not the problem. The problem is she is an awful GM.
I'm pretty sure she takes it personally when we solve her material any way other than how she plans.
She targets people that challenge the logic (or lack of most of the time) of her world:
Last week, another player kept asking why the population of a city we had just visited dropped by 20,000, yet no mass exodus or plague had happened to cause it. Not even 5 minutes later, a red dragon at least 10 CR above us swooped down, ate the player, then proceeded to kill the other half of the party (we ran away obviously).
Another time I questioned why something barely larger than a lake was an ocean when it wasn't even salty. She killed me with a shark immediately after.
(At that point I was no longer emotionally invested in my character, so it was pretty funny at the time. I think laughing when I got killed just made her angrier. :P )
I've tried to teach her the best I can (I've done 2 sandbox style campaigns to the end with no complaints) and she won't listen or even try to fix what's wrong. I'm trying really hard to keep the campaign alive by stepping and putting it back on the rails every so often, but it's obvious she doesn't care.
Should I leave or try to teach the DM/GM what she's doing wrong? Do I share responsibility for this awful campaign because I encouraged her to start it?
The group as a whole is unhappy, this isn't just me ranting. I have been upfront with her the whole time, and she gets upset/more defensive when I point out larger mistakes. I've already upset her a lot by saying straight-up what all the problems are in private. I'm contemplating just leaving and letting the campaign deteriorate on it's own, to preserve the friendship.