Well all you need is Fireflies and you've got'em all.
Ah okay! And to get the fireflies ending so you know how to get Gniretiol & Dradnats, what you would do when your in that part of the game, is you give her the rose, then leave and go back to her body and she'll ask you to catch 10 fireflies and you do, then after you catch 10, you hover over her body and you'll find out what she says. Hope that helps! :D