I follow these steps, but you have to be pretty fast and make no mistakes or the girl or the officer might escape: first I turn on the light, get the poster, activate the fox, go into the vent, go to the walkie-talkie room and get its transformation, return to the spawn under the desk, use the walkie, enter the vent, go back to the walkie room and use it right in front of the vent, enter the vent again and go to the spawn of the two girls, and when the officer enters the room I come out of the vent and lock her in the room, go back into the vent, go under the desk, come out and activate the fox again.
After that you can move almost freely and interact with the girls, but remember: do it as fast as possible and don’t let the bunny girl leave the room in our spawn. The bunny girl must be in our spawn when you activate the fox.