Not much. I, at least, will not drag you into their affairs, nor will I tell them to interfere in yours. Simply knowing that you will not be fighting against each other will be enough.

[Magical Girls, with their large supplies of prana, could easily cause havoc if they fell to fighting each other.]

The magical girls I am current aware of are Hayate Yagami, Mami Tomoe, Satou Kuroneko, and "Homura". Rin Tohsaka might be one as well, depending on whether or not her Kaleidostick recognizes her as Master.