Solo'd her today, 69 Ranger w/ AC 2050, with a merc healer. It was a tough fight - she does hit hard for a cat (1100 max on me).
Had no trouble snaring her, and she did run at 10%. I slowed her with Swarmcaller, and I'm sure that helped. Despite my taunting, DOTs, and flash-damage spells, she turned on my healer a couple of times. I was often reduced to under 20%hp during the battle.