In such fanfiction, Ino might be depicted as more assertive in her feelings towards Choji. She could be shown as using her beauty and charm to get closer to him. Choji, on the other hand, might be presented as a bit shy but very loyal. He would be someone who is easily flustered by Ino's advances.
Ino would likely be very concerned. She might immediately try to use her mind - reading skills to figure out what has happened to Naruto. If she can't break the hypnosis right away, she'd probably seek help from her teammates or sensei. Ino is a determined character, so she won't give up easily on saving Naruto.