If youre worried about stressing her, you can always start tying her down!! Just as effective as topping!
*edited* you can still tie down after topping, will promote any lateral growth to shoot upwards!
Day 12 of flower. Hoping for another week or two of stretch as they did not get nearly as big as I thought they would. (im sure night time temps and plenty of other factors came into play here) still looking great tho!