Long story short, Narcissa is being a pain in the ass (as expected, I guess). Tried a lot of different approaches so far, and ran out of ideas. All of them basically ended on my team being OHKOed by her STAB moves before whatever plan I comes into play. Screens don't last long enough, Simple Swoobat just doesn't live enough to set up and so on.
Any ideas, at all? Last tried team was Delphox, Grumpig, Solrock, Lunatune, Swoobat and Meowstic (M).