How bad of a break? A full on snapped off or just a little branch superficial surface break?? And just to let you know i cracked my main lady base stalk at the topping node so basically the plant split into two but i zip tied here back together and made sure wound is hydrated always. Thats the most important thong is keeping it moist so it doesnt dry out and die. I did duct tape and zip ties and straws from McDonald. They support great. But you look like you did most of what i said so just keep her hydrated
Sounds like an unintentional super crop. Your plant should recover fairly easily. No need to mist. Simply carry on as usual. Remove the splint when the plant is strong enough.