It's supposed to be, I know mother nature can be weird sometimes but it's supposed to be feminized. She is due to hit the flower tent in about a week, she popped on Christmas I think. https://rollitup.org/t/mars-hydro-grow-journal-ts600-x2-4x3-red-hot-cookies.1042920/
Here she is from the beginning. She should be way past pre flower. I don't have the room in thr flower tent just yet so she will have been vegging for a couple extra weeks. I'll try to get a few more shots.
If it was sold as a feminized seed I'm going to guess it's female... No idea why you are stressing out. If you've flipped to 12/12 you'll know for sure soon.