Ate shrimp the last 3 days, so I guess sometimes you just need to play hard ball. Maybe I'll try to wrap a shrimp around a pinky / fish to trick her into expanding her tastes.
Unfortunately, had to utilize the starve out method again. And it's too early to really celebrate. But she's been so picky about what she'll eat, I wanted to just try to get her eating pellets, so it's more balanced than just feeding shrimp all the time (the only other thing I've found she will eat). So the last few days, I've been turning off the filter and adding a mixture of pellets, then removing them like 30 minutes later. Today she finally ate some. I didnt see it unfortunately, but the pile was noticeably smaller when I came back, so. Little celebration.
She's been eating pellets for over a month now, and she's growing big. If this thread comes up for anyone looking for help switching to pellets for an alligator snapping turtle, just hold fast, they'll eat eventually!