Not gonna lie, I wanted to wait overnight before commenting to see what someone else said. But I'd label this spider confirmed female... however, seeing it in person is always better. So use your judgement. But to me, I see pretty clear spermatheca there.
The reason why I'm hesitant to make a call on this is because the flap that I see could very well be the textured background showing through. In the future, try using a backdrop that wouldn't do this. I like plastic file folders or tile for this reason.