Just an update for anyone interested in this topic or following this thread: Athena is now eating!

I first moved her tank to a different spot in the room, where she is now getting better ambient temperatures. II was still having trouble getting her to eat, so I brained the next pinky I fed her, and left it in the tank and left her alone for a few hours. When I came back, it was gone. Since that meal, she's been taking the regular thawed pinkies off the feeding tongs when I offer them. I haven't had to brain another pinky for her since. She is also a lot more active. She isn't gaining weight very quickly, but she's not losing weight either, so I guess that's a good sign!

She's currently weighing in at 32 grams.