That was exactly the scene I was talking about. If you replay that battle, every time Inoda did something to Asuna the boss did something in the same area so she wrote off the sensations as something the boss did. Unless Inoda can time his fucking with something happening in FOG, he would get caught.
I just watched this scene, and all the boss's debuffs only affected Kirito, and Asuna keeps saying that she's fine. Her leg itches, but her heart gets a little warmer. And when he casts poison, and Inoda starts licking her, she says, "It's weird... it doesn't show the poison status... but I feel sleepy... and my body is getting hot...". And when Inoda forces her to give him a blowjob, and the demon casts silence magic again, she doesn't even say anything strange, she feels it, she just removes the spell from Kirito. And when he uses magic again, and Inoda starts fucking her, she says that no harm was done to her, she just feels sleepy and a little numb below. And then she starts moaning during the fight, although he didn't even cast a spell, he just hit Kirito.
In general, I mean that the statuses in the game themselves didn't work for her, and she says it herself more than once. However, she has no idea that something is happening to her in irl. And Inoda himself went there without fear that she would be able to find him, although he could hardly have imagined that some of the boss's spells would coincide with his actions. From this, I can assume that he knew in advance that while she is in fog, she will not be able to fully sense that something is happening to her outside.