just found your thread. hope you don't mind the post. mine has just done the same thing. After 7+ months, overnight she moved from plain view "spot" to out of sight. Water Parameters seems fine, KH 10, PH 8, temp 80, nitrates 10. she hasn't eaten in almost 2 weeks and usually eats every 2-3 days, salmon or shrimp w/selcon. after reading your thread I am just going to wach her form the next couple days. If you could please keep posting updates it would be appreciated.