I'd recommend you don't do more cutting into her.. It's week 4, Quick One should have started sexing by now.
- Even more so, since it's your first grow.. If you want to top plants, start with photos until you know what you're doing.
Keep with the LST.. If you cut her now, she'll spend the energy you're trying to save, on healing the cuts. you might even end up with even less of a yield..