Well, yeah. But that doesn’t mean that it spills over into other areas of their lives. Or even if it does, it doesn’t mean that they feel the need to act on it in inappropriate situations.
ETA: I shouldn’t have phrased it “something of an exhibitionist.” That softens it too much.
I concur with all you other posters. This is what I think of this girl:
Not sure about some of those possibilities, but something does seem suspicious to me (and not a sex worker having the gall to date). The way the OP tells it, it sounds like she really, really wanted him (her?) to figure it out. And fast. And that the brother was eager for this to happen, too, perhaps to brag.
Then she lied to me. Not much I can do about that. She said she got her braces off four or five months ago. She doesn’t have braces right now, that’s for sure…unless she has some kind of “fake” braces that she wears just for photos shoots.
Either that or just got them off just last month. Don’t know. Don’t care.
I highly doubt it. We’ve met once, for one. For two, she didn’t seem all that into me (read: not at all). For a big three, she showed the site to and told all the info to two other of my brother’s friends, one of them being his best friend whom used to also live over there (not at the same time as her, though).
So, really, what I’m thinking is…she just likes showing it off and bragging about it. She doesn’t care if people knows and likes to get the knowledge out. It’s probably just as simple as that*
*with the exception of telling my mom and stepfather about it. They’re pretty old school, after all, and she’s living there. I can see how that might be weird. At least weirder than anything else that’s happened so far.
Now, now. Just because TvTropes is full of anime fans does not necessarily mean that they are all pedophiles 
She’s not attractive at all.
I imagine this is probably the closest to “fame” that she’s ever been. If that tickles her fancy (skipping crude joke) then of course she’s going to want to tell everyone about it.
The situation with IT’s Mom and Stepfather really reminds me of that Simpson’s episode where he rented a room to web cam girls. Tee hee. 
Delightfully so. 
Speaking as a foot fetishist, I think they may be her best feature.
She is if you’re in 8th grade, and/or find girls who are (or resemble) 8th grade girls attractive. I mean, she’s not ugly, she’s just a cuteish girl who is built like I was before my crotch starting bleeding once a month.
Wow. That reminds me of the movie teller that told Bevis and Butthead, “Come back when you have some pubes, mmmkay?”
Also, the bleeding from the crotch thing is, uh, well… more graphic than the mention of a porn participant.
Then again, the elder women here are probably more fit to analyze the dalliances of a wayward girl than we horny dudes.
It’s really not graphic to those of- you know, the one half of the humans on Earth- us who it happens too. Not more graphic than you sneezing- but maybe that’s just me.
Females menstruate, I get that. Bringing menstruation into porn is different. Get it?
We can’t mention that women of a certain age menstruate? It’s kind of how us women differentiate between the young kids and physical adults among us. It’s perfectly reasonable to say that the girls on that website look prepubescent. What do you think that means for a woman?
Or are you upset because you were super digging the hot chicks fingering themselves on that site and then we had to come into this not porn thread that linked to the porn and mention a natural bodily function that helps determine sexual maturity?
Silly Diosa. Don’t you know that the fundamental duty of women is to be sexy for men? If we start going around reminding them that we have identities outside of that, and bodily functions and stuff, it makes it less fun for them when they objectify us. We can’t have that! Just imagine what might happen !!!
I know, right? I’m not talking about bloody porn. I’m saying there is an age at which girls begin to menstruate, and if a girl has not (or does not appear to have) reached that age, the idea of finding her sexy is a little creepy to me. That child needs to sprout some boobs and some hips… and a tampon! Okay, *now *I’m being gross.
Look, you can’t just talk about bleeding from the crotch. Even though it is a monthly occurrance to billions of humans worldwide. IT’S NOT TO BE DISCUSSED, OKAY? EWEWEWEWEWEWEW. We females are just so disgusting.
The first rule of crotch bleeding is don’t talk about crotch bleeding.
No, really. What if some poor man is forced to stop fapping because of you and your disgusting body? You’d feel terrible, no doubt.
“My ass was like two elbows”.
ROFL. This will probably be the funniest thing I read all day! 
Based on what people are writing, btw, I’m not even gonna bother checking it out. I like my porn women to be more, uh, full figured.