User blog comment:Xilinoc/Ch. 580 - THE LIGHT/@comment-11446176-20140514110357/@comment-11051098-20140514153246

Bambi said something like "no, Gigi, don't do it". When she showed up to find Sajin before their battle, she called the 4 girls Gigi, Lili, Candy and Meny, and the short forms makes it obvious that she was talking to Giselle, asking her not to "do it".

I think Giselle might have given herself a wound or something, letting her blood drip down on Bambi, turning her into a zombie she might call upon and use against whoever she'll be fighting.