Is it normal for my gf to have lost her virginity this way?

I know my girlfriend had been to a modelling session before we met, but up until recently I never knew the details of it, which she has kept hidden from her family. Basically there's a bunch of pictures of her from that session, in her clothes and also a frisky one where she's sitting smiling on the toilet with her panties down. Well, those pictures just gives the half truth of what was going on then...

Her family was against her going to such a photo session, but was appeased when hearing another girl was also coming. They thought that nothing bad could happen if they were two.

Coming to the guys appartment, the photographer gave them drinks and started taking pictures of them in different poses. He showered them with compliments and told them how pretty they were. They of course were thrilled. Well, after a while he started telling them that in order to succeed in the businuess, they needed to do erotic images. So he made them pose topless, and using his charisma, convinced them to bend over a table for him to show their underwear.

He makes them smile back at him and takes pictures. Then, he wants them to pose nude. They are doubtful, but he tells them that nobody will know, that they're beautiful, and how nudity is nothing to be ashamed of. Soon they let him pull their panties down, and let him take pictures of their naked butts. They of course are embarrassed, and standing together they just hide their faces while he's at it.

Having two naked girls exposed like this just proves to much. The guy puts down the camera, tells them to stand still, and proceeds to kneel behind them. So with no sexual experience, they get their asses eaten. The girls are completely embarrased, and he keeps at it for a long time.

He telles them he's going to have sex with them. There's the sound of a zipper going down, and my girlfriend feels a brief pain, before something very instrusive is moving back and fourth inside her. The same thing happens to the other girl. There's a brief "ow!" and the guy has his way. They are made to stand still, while he shoots his load in both pussies, wipes the blood, and takes further pictures.

He thanks them for the ass, and makes sure they'll take the morning after pill. The windows are opened to take away the smell of sex. And he makes a modelling compilation for their families where the explicit pictures are taken away. They are fetched after a while, and that's that. So the picture of her on the toilet is basically of her peeing out his cum.

Now my girlfriend says she regrets it, and that it was something that just happened in a sexually charged setting. I'm just shocked that she could lose her virginity this way, in the slutties way possible really. Not only did the photographer get the virginity of two very young girls, he's also got pictures of them in a very exposed position.

So should I be upset about this, or just try to forget all about it?