NNT, you've been putting a lot of thought into this. We learn from our mistakes - and it sounds like you've identified the mistakes here, at least some of them. This is good.
The graduated system sounds like it's worth considering and maybe talking it through (I like Linda/Timer Lady's advice here) because she HAS had a lot more freedom and to seriously curtail it would cause a lot of dissent and may prove futile. But involving her in the discussion would perhaps be a good idea.
Something I remember with easy child at this age - although she has a very strong will of her own, she was too easily influenced by friends (yet still a lot less so than many others her age) and this was why some rules consistently got broken. For example, although she was respectful and polite to me virtually all the time, when she had friends over she would put me down and laugh, clearly trying to present herself to her friends as the one in charge (not me). And if I chided her in front of her friends it produced a major meltdown - "How dare you embarrass me in front of N?"
I know her friends were embarrassed by her behaviour as well, and she and I sat down to talk it through when no friends were present - she said she didn't know why she did this, she was aghast at her own behaviour but she couldn't control it. So we set up a reminder system - she gave me permission ahead of time to stop her in her tracks if she ever did it again. Now, I shouldn't have needed permission, but my ultimate goal was to teach her maturity and self-control in this - and this was the only way to do it.
And it worked.
The phone I was talking about - it's called "Tic Talk" and I'm trying to find out if it's available in the US. It's a way of ensuring your child can be reached BY YOU and that your child has a few phone numbers (pre-programmed by you) which they can call to make contact. The bill goes to the parents, there is no text messaging, and the phone is microchipped so it can be linked to any out-of-bounds area the parents wish to program in. If the child goes into this area, the parent is immediately sent a message notifying them that the child is out of bounds. There is also a website where you can track exactly where your child is at any time.
This phone is marketed in Australia as a means of parents keeping track of their children so they know the kids can reach them in an emergency, but cannot run up a huge bill or waste time playing games or constantly texting. It's getting back to what a kid's phone should be for - safety and security. If it had been available a few years ago, we'd have got one for difficult child 3.
Of course, a wily kid could beat the system by leaving the phone somewhere in bounds and then going out of bounds without a phone, but even a phone like this - unless they have acquired an illicit phone, most kids wouldn't be caught without one. (I just had a more detailed look at the website - it looks like the online monitoring/out of bounds area isn't available in the US)
It doesn't look much like a phone - more like a very small, round keyring that clips onto a backpack. it has four numbers on it for the preset numbers. No key pad.
I reckon Simone Warne should have got one for Shane, judging from today's headlines - him having a Tic Talk should have been part of the deal for their reconciliation, he made a BIG mistake when he sent a text message to his mistress, "I'm just talking to my kids, the back door's open" and accidentally sent it to his wife Simone. OOPS!
As I said, easy child at 13 (even at 15) knew she needed supervision and sometimes even asked me to forbid her to go to a party! If she could say I had forbidden it and make me sound like the baddie, she felt safe AND free of guilt over not going. When she had more freedom, things would begin to go wrong, so I had to keep t he reins fairly tight. It was always open to negotiation, though, and I do think this negotiation is the beginning of a healthy understanding of personal responsibility. So follow Linda's advice, set up a conference to discuss what went wrong (on all sides) and what each person (including difficult child) thinks should be the response. Discuss all the ramifications - "if we do not punish at all, what will that teach you?" "If we ground you again, takeaway the computer and phone, what will that do?"
and so on.
A lot of social stuff at this age is tied up in texting. Not all of it is healthy - in fact I think a lot of it is unhealthy. An enforced ban on phone use except for emergencies or routine "I'm finished at sport now, please come and pick me up as arranged" is about as much as she should need for a while. We didn't have that option when easy child was 13 - mobile phones were VERY new, the "phone home for free" option was the best we had. husband or I had the use of the mobile phone (a brick, which I had won in a competition) but very few people had one back then.
Since then - these things have come in everywhere and the big problem, as someone else pointed out, is that you can get a call on your mobile and YOU could be anywhere, the caller could be anywhere and you HAVE to rely on people's honesty. While our Aussie police now have legal powers to track anybody's phone/mobile/internet usage with no need of warrant (scary) I do feel parents should have the same rights, if we're going to let the police do this (they could track an ex-girlfriend or her new boyfriend, purely for personal reasons, and nothing can be done about it).
So rather than totally take away a mobile phone, because I DO think it has been a great leap forward for a kid to have a phone to call for help or assistance, maybe get something like Tic Talk which is set up just for this sort of situation.
Or maybe just threaten her with one? (just kidding - sort of)
Where does husband stand on this? She IS his daughter, after all. He shouldn't be leaving it all to you, he should be stepping up to the plate. Being so close in age to her can't make it any easier for you - not that I'm referring to inexperience - it's the lack of age difference from HER point of view that will cause much more trouble. I see it with my kids - easy child & difficult child 1 can discipline difficult child 3, but not easy child 2/difficult child 2, because she is only 7 years older, he just won't accept it from her. And as we all get older, the age gap seems to shrink.
Good luck with this one.
Marg