I would say skepticism would come later as you said. Right now she has NO reason to think this isn't real. But in time, I think she'll notice some inconsistencies and start to do some more digging as it starts to bug her. Though in my mind, Ino's feelings won't be about falling for Shikamaru the way ShikaSaku intend, but Ino would just be curious and wanting to know the truth. Unless you were thinking Ino would actually develop feelings for Shikamaru? I'm just curious to see where you think Ino will eventually come from. I'd say she'd want both to be happy and she'd see Shikamaru as a possible mate but I think Ino would know she and Shikamaru just aren't quite compatible, plus I think Ino in the end, would think Sakura and Shikamaru are, even if they don't realize it yet. Thoughts?