You think since Asuna still thinks Kirito is having sex with Leafa, if she sees Leafa at their base she will get pissed maybe thinking the hussy is invading her territory or Kirito is going to cheat in their home, the very thing Asuna is doing with Inoda. So she will get pissed and do stuff with Inoda in real world? If all that happens on Wednesday then it will be very awkward on Thursday when they all come back for the next part of the ritual.
But to be completely honest, "Kirito" fucked Flora. Fujino established the rule that because of the veil that hides the face, Lifa and Flora are two different characters. Therefore, Asuna must not recognize Lifa. It's more a question of what Asuna will think when Kirito brings a completely unknown girl in a very revealing outfit to the base and tells her that he goes to do quests with her. How hypocritical, jealous, possessive Asuna would naturally get angry and and, of course, she will show her frustration by dropping Kirito's relationship points and having sex with Inoda. Instead of talking.
And of course, Inoda's thoughts are "How lucky this black man is, he takes all the beautiful women for himself. Asuna, and now this Lifa is next to him. I hate him, oink oink."
If Suguha did come around the base when Asuna and Inoda are around, Inoda would just use his ability make them go invis. It is not like Suguha has anything to counter Inoda's invisibility so she can't stop them from fooling around. Maybe her time stop can catch them doing something but it would not stop them.
And how will they know that she has come? Inoda is very self-confident and arrogant, and if, for example, Kirito is not in the game, then Inoda simply does not need to use invisibility. Lyfa will come to the base, precisely in order to find compromising material, and will hear Asuna and Inoda fucking. Well, that's it, he'll turn on the stop, take videos and screenshots. Maybe we can set up some cameras at the base.