Don't worry, that happens every now and then with autoflowers. Partly due to genetics and chance. I have two different cars in the grow room, which grow at totally different times under the same conditions.
Maybe your lady didn't like the LST that much, but as long as she keeps growing and the leaves look this good, you don't have to worry about her. Then it just takes 2 weeks longer than usual.
Oh by the way, please leave out Power Bloom, you won't need it until the 3rd week of flowering at the earliest.