If I remember correctly she needs to be in a high mood, the mood increases every day you have food
I ended up cheating and modifying the save file just so I could see what happened under the third option for "Watch TV" wrestling 😆
I've played many of your titles, and have a few still on the yet to play list, but this one has been my favorite so far. I like the rubiks cube type of games where you have to figure it out by playing.