He just wants her to act normal and draw a clear line for him about where they should stand with each other. She was the one who acted weird about it, so I feel like it's on her to take the next step. But I'm not going to tell you how to write or anything, so I'm just going to stick to the plan of Haymitch teaching Prim how to spar while Gale and Katniss talk unless you want to do something else.