Okay, after some talking with Lana, I think there's a small chance we can survive this.
Melis continues with the original plan of blocking the Agent in the 4-door room and making her way to the clock tower through the balcony.
Burn, Balder, and Hawk go to the N/S Corridor as intended, with their Agent following. Then they go through the northeast door to the 3-door room, then north into the room between that and the library. They jam the door and hide in there. Then, when their Agent passes by, they head back through the 3-door room, the N/S corridor, and the hallway to the clock room, then to the clock tower.
Still open to suggestions and adjustments, of course.