There's not enormous amounts I can add to the "You really shouldn't have done that" area, so I'll go from a different angle.
I have gone through many best mfc friends. Most I still consider friends now, but generally there will be a time where I will find someone I really get along with, who also tips, who I'll end up turning to when I need someone to talk to. They know about some of my real life relationships, they know vaguely what's going on in my life. Some of them I'll end up chatting to on skype and other forms of social media, although usually I avoid it when I can. When they start moving on, or not tipping as much, usually I will too. I'll have to start directing my attention to that new regular who I also get along with (members, you're words on a screen, as much as you may get along with a model, and she may care about you, you are replaceable).
If I ever ended up not speaking to one of my regulars as much, it could be for all sorts of reasons, probably none of them that personal, but if one of them decided to search for me and read up on my real life info... yeah... total breach of trust.
I also have to ask, how did you learn her real name? If she's doing skype/started doing skype in the first place was this because you paid her using paypal or another transaction that gives out her real name? This happens a lot, yes sometimes models aren't cautious enough, I just cannot see her giving out her real full name freely to you if she didn't like the idea of you viewing her facebook. Especially if she hadn't already blocked her facebook from searchers.
I'm going to go out on a whim here and point out, that although I personally try and lead people on as little as possible... it is a cam models JOB to lead members on! It's the members job to understand what they're getting into when they type in "myfreecams" instead of "match.com". Do you all honestly think models are all having a super good time when they're on cam laughing? That they're all genuinely horny when they show you their wet pussy? Heard of lube right? Has it never occurred to you that maybe when a model gets close to a member it's simply because she's lonely and stressed as she worked behind a screen and just needs an outlet of her real thoughts, rather than because she genuinely values you so much as a person? (shock horror!) You're words on a screen. Sometimes with a cam you can be a face behind those words, and yes, sometimes models do become real life friends with members, sometimes they end up dating them. It's rare though.
Basically, accept cam friendships for what they are. Models you speak to are almost definitely not being honest about their lives. They also do not care about you as much as you think you care about them. Remember, you are the one who came to them. They never went to seek you out. And remember, above all, models are there as it's their job. Members often talk about a model still keeping nice with a member they don't like as they don't want to lose tokens as though it's some horrible cruel thing... ermm.... whaaa?! Would you have a bitch fit against a store assistant who smiled and acted polite after you say something stupid? Is that person evil if they still sell you something and take their commission? No. Most store assistants don't like customers. They're doing their job though. Personally I'd rather go into a store where someone at least acts friendly and nice.
Yes you did do something wrong, very wrong. It may not seem like a big deal to you, but for a model the idea of someone from camming forcing their way into our facebooks.... well it's internet rape. It's forcing your way in to something inside us. Something so personal, something we never wanted you to have. And I'm sorry, but it may sound stupid, but it can be almost as traumatic.
Someone finding out these details endangers our lives. It can make a girl live in fear. Jesus, we already live in fear doing this job! It's like a camgirls almost worst nightmare coming to life (worst nightmare is someone tracking us down/full blown stalking us, so it's not far off).
It's close to a stranger searching through your room for your diary and then reading it. It's just so beyond ok.
No. What you did was very serious and I really hope you understand that. I can understand facebook stalking. It's easy and it's tempting. I get how tempting that might be. I also get to someone who isn't a camgirl and doesn't face these fears how this might not seem such a big deal. But fucking hell, in this situation it's so not on it's ridiculous. I seriously hope you apologise to her and then never speak to her again and learn your lesson.