Okay, I've scoured every part of all three mansion pieces for nearly 90 minutes—inside and outside, backyard, front yard, even the basement... and I can't find Truffle during the "Choking Hazard" part of the mission. I try to follow the "scent" trails, but the problem is they go in three different directions, and one of them is 90% underneath the map when I travel to the second floor, so I have no clue if other parts of the trail are being obscured somehow or what's going on. Is it possible she just doesn't spawn in some places?
So far, I love everything else about the game—the movement in the bondage feels organic, and I love how the puppy suit is always silent—but if the missions are broken, that's gonna be a real game-killer. This even comes after I see a changelog in-game that says Truffle was made easier to find in this current version.