Hi mate ๐
If the plant kept beyond 16h of light begins to show its preflowers after about a month from birth, or a little more / less, it means that it is an autoflowering ..
Instead if it continues its vegetative state, it means that it is a photo-periodic..
At that point you will have to find out if she is feminized or if in case she was a regular seed you have to hope that she is a beautiful girl ๐
I hope for you a good surprise๐ค๐ฑ