If I were Yukiko-Chan, I'd resume my forum posting without flaming anyone and would stay away from Firemaiden-onee-sama. I'd also keep comments to my self and be as pacific as I can. If after I post neutral stuff and Firemaiden-onee-sama comes to provoke me, I'd report her post as a "Lure" to start a flame-fest, and let Varis deal with it.