glad to see you got a female. told you it wouldnt show until it was ready. sometimes it can take weeks from the 12/12 switchover. it wont do it until its mature
give those preflowers a day or so. they are too small. when they are that size male and female preflowers look the same. wait 2-3 days. if you cant see hairs on any nodes then look again. they will start to look like little clusters if they are male. it takes a couple weeks as far as im aware for male pollen sacks to erupt so you'll be ok with a day or 2