I think (hope) Timmy is having the gravid grumps. She has been dominating all 3 of the others, including the male (by head nodding and humping), is up before anyone else, and last to go to sleep, and today I caught her digging a hole with her back legs in the deep side of the enclosure where there are 9+ inches of coir. No eggs yet, but from what I've read, that sounds like gravid-female behavior, doesn't it?!