My 9yo has a boyfriend she kisses, so I would certainly find a 12yo doing the same to be very normal. I would also find the age difference to be fairly normal, as girls generally mature faster than boys. I agree with 'making out' being an extremely vague term. I've heard it used to mean anything from kissing to oral sex. Assuming the 'making out' is just kissing and maybe necking, I would doubt that the girl is in over her head, and I also doubt that pictures of kissing posted online are going to be a problem. If I had a facebook page, I'd probably post some pictures of myself kissing my partners, lol. I can't believe anyone would consider that to be scandalous.
But someone should definitely talk to this girl about sex! The amount of misconceptions about sex in that age group are truly mind-boggling. You definitely don't want her learning about it from her misinformed peers!
no offense to you at all, mama, i'm just astonished at kids right now. i was a kid once too and not even that long ago but my goodness things have changed. so much. i think we're doing our children a huge disservice by allowing boyfriends and girlfriends at such tender ages. my ds is stilla baby, yes, and i have no experience with these situations yet and i honestly do not know how i will handle the first girlfriend. but i do know he will not have one until he is at least a teen, and hopefully a mid-teen, like 15 or 16 hopefully.
sheesh. back to the op. no you are not a fuddy duddy. that picture would blow my mind and i would have to hold back saying something to her about it. you should by all means make sure something is said by someone asap because even if you take the making out picture out of the situation, she's still posting her pictures online and thats a huge nono. it's dangerous and will only lead to other things she could do online and trouble she could get herself into and wrong people she could attract.