My female Ocellaris Clown Fish is laying on her side--why??

I have been checking on this hoping that with the good advice that perhaps her fish pulled through.

 

dont know if this will help. but if your clown act funny at night its normal they sleep in the strangest manners if they dont have a anemone home of some sort. mine (2 true percula) would float on the surface at the mercy of my pump currents tapping the side of my glass as they floated away, needless to say it scared me ****less the first few times. now depending on the night and how they feel they either sleep in my torch or my orange BTA.