Still confusing if she is a male~

You know, I named her "Maria" in the first place.

Why have I always been confused if she was male?
Since many people agreed that the tail distance from the plastron was females, I have been keeping her with females.

But one day, she was climbing on other females in a mating stance.

I really was interested, thinking this one might've been a male.

From the moment right on, I put her with males and no male seems to have courted her.

Now, I'm getting a feeling that I have to start call this one not her but him.

Well, from this angle, the tail seems thick enough of male.
She(He) is always very actively moving around, it always takes quite an effort to get her(his) whole body in a picture.
When I posted the picture of her tail location off plastron a couple of years ago, everybody said that it just looked like female's.
If she(he) has a round eyes.
The eyes seem to have been blackened, haven't they? Which is the distinctive sign of a male.