Wong can be a pretty big counter. He isn't scared of Incorporeal and she doesn't want to bunch up against him really. If you have Burt or the Lovely Assistant you can also try and use Crackerjack timing to pull things out of the aura. I also would strongly consider Brewie because Swill makes summoning a pain and he isn't doing much to summon Ikiryo if you're stacking poison and killing with a performer. Ikiryo also needs to flip or cheat in a 7 just to act if she summons near Brewie. Like has been said before you can also Obey a model out of the aura to kill it. IF you can get her poisoned and in the drinking contest she'll have a tough time sacrificing and that's almost as good as burying her? Kind of? I duno, I love Brewmaster so I tend to look for ways to use him anyway.
Wong is probably safer.