My big issue was her using that single-target rock throw move, because its capable of one-shotting absolutely anyone (including Meiling). She also loved opening by one-shotting the person in the second slot, which was usually Reimu or drunken-bitch.
I pretty much lucked out this time because she used State of Enlightenment a couple times in a row, which gave me time to have Meiling focus a bit (had to have enough for Colorful Rain at all times with green bitch dead (another victim of that rock drop move, albeit not on turn 1)), prep Marisa's Master Spark, debuff with dragonbitch, and prepare Chen for the next set of phoenix wings. She also didn't choose to spam her rock drop instakill like she did on a couple occasions. I had another 3-concentrated Spark in reserve, so if Chen didn't kill her and she focused again I could most likely have benched Chen and dragonbitch, had Meiling eat the move, then let loose with Marisa once the storm had ended. In short, I got extremely lucky.
Now I just hope this girl can help me against the boss trio I need to face to get on with the story...