Re:over fed? – help

Dear Pete,
Thank you so much for your help. I have not seen her swim on her own. She has moved to different locations in the tank however I have not been home to see how she moves. Tonight I found her in the back corner again with her nose in the sand. I moved her to see if she would swim and she just moved where I pushed her. I decided to put her in her feeding cup since I know she is comfortable there and see if she would move any. She just slid to the bottom and then leaned her head out the opening. I left her alone for a while and then took her out of the feeding cup (by the way the cup stays in the tank the whole time it is just something to give her a place to eat from that the other seahorses do not go into) and let her drift and she just floated down to the sand. She will not try to curl her tail around anything and just started to fall over backwards slightly and then flipped and slowly fell forward until her nose was again in the sand. I put her back into the feeding cup and would like to know if there is anything I should do. I have not fed her since my return which was Saturday night (it is now Tuesday evening). Trying to be objective I think she is slightly less swollen (I can see some of the ridges along her side which were not noticeable before). I cannot tell if she has been eliminating. Usually when I see them eliminate it is in mid swim and it is just a long semi thick tube looking thing. I have not seen pellets. To sum up:
Should I let her loose in the tank?
Is there anything else I could observe that may help with a diagnosis?
Thanks again for all your help.
Laurie