No isnt possible, that is the limit animation. But you can mask the problem using this trick.
Open up a hex editor, and search for Chaos.Dat i cant remember the other creatures dat names, but is near Chaos.
now if you created jessie in cloud slot, because youre using jessie as main char right? Changing the dat files into cloud.dat
Now when she use the limit, will remain jessie if im not wrong but his hp will rise.
Hope this helps