Very common behavior for any sarco. ssp. When she's good and ready (and not one moment before!) she will shed off a layer of slime and extend her polyps. The slime is pretty toxic and if possible best if manually removed from the water column once shed. It seems that if you try to *help* her remove the slime it gets cranky again immediately, at least for us that has been the result.

The temper tantrum doesn't seem to coincide with anything in particular for us like waterchanges or other changes in the tank, more like AT mentioned above, it's tuesday and I feel like looking dead today.

But the fussy spells last for a day or two, a week, or weeks at a time... no rhyme or reason to it, just a guess but it might be part of some sort of growth cycle, as after each episode they get larger <-- pure speculation and observations on my part