I would use a little tape and tapie it back to the main stem pretty quick if you can. I have done this before on many plants that this has happened to and it heals itself if its not too late. When it does heal itself the spot where it broke will form a huge callous around it. Happens alot in super cropping .... should be fine just use some form of tape to pull her branch back up and support it from the main stem ..... weed can take some punishment .....
I didn't have any tape and the leafs were already like dead looking, I cut it off an inch from the main stem and pushed the chunk back in the hole. lol
Yeah I had that happen to me actually to the big tree that my avatar is was outside and storm was going on a peice of wood landed on my plant and literally sliced the plant vertically in two ..... dont know how it happened but I taped it back up and she grew even bigger. Weed is pretty tough man hence the name weed can handle pretty much anything you throw at it....
I know this thread is a little old, just had 2 branches do the same thing. I used a couple of zip ties to hold them in place until they heal.. anyone see any issues from this method?