[Maryz]
This whole thread started because your dh - not your dd - got himself into a state. It really is making a mountain out of a molehill because, when push comes to shove, all she did was go to see her boyfriend and come back on the last bus.
The only thing that prevented you from experiencing peace of mind as you headed off for your work commitment was your DH losing it.
The triangular relationship that is going on here has as its end product a lot of drama, not solutions. Just out of your reach is the dramatic prospect of total victory. Until you wean yourself off your need for drama you are not going to be interested in working for solutions.
I am in a situation where if DD is told she can't do something she ramps up the confrontation and becomes verbally vitriolic, won't leave you alone, faces up to you and won't let you walk away from situation. So my choice is back down and let her do whatever she wants even if we have said no. Or finding a way of teaching her that she can't always get what she wants or intimidate and manipulate to get her own way. I think that is quite important for her to learn. It is in essence what I am asking for advice on. All the background stuff, while relevant does not take away from the essential question. How do I deal with this as a parent?
'So my choice is...' There is that taste for drama again. You have more choices than your script allows you to imagine. In order to make the answers to your essential question work, you are going to have to change how you see DD, DH and yourself.
Your script here is 'I am a victim/rescuer, DH is a victim, DD is a persecutor'.
You state that you try to have heart to heart talks with DD. This is you playing rescuer to DD. Rescuing is always a fundamentally disrespectful operation but it is an especially disrespectful stance towards a teenager because you are teaching her nothing useful about becoming an adult. Stop picking over her feelings. Feelings are not so important that they need to be shared, expressed, 'helped' with.
Feelings are never wrong, or right. Her schoolwork and progress or lack thereof are otoh very important and she needs help here. You are making her accountable to you for feelings but it appears you do not seem to be holding her accountable to you for the lack of effort and poor time management that are hamstringing her in school. You need to provide more structure when it comes to school/homework, in the context of her working towards something that will be great for her, that will enable her to take the next big step in her life, something you firmly believe she is capable of. Family meetings, sharing of calendars, making time and place neutral and not loaded with unspoken expectations and efforts to manipulate -- all important.
People need space to deal with feelings by themselves. If she doesn't come to you, don't go to her. If heart to hearts never involve family members apologising to each other then they are useless. Ask yourself if the heart to hearts are intended to provide you with affirmations of unconditional love from DD. No matter what, in your case these little talks are just skirmishing though not quite on the barricades as you all were a few days ago, and you see yourself how they escalate, fueled by entrenched habits of mind on both sides.
As a more respectful stance, develop better boundaries -- leave her feelings alone and respect her right to them. Accept that her feelings are not the issue here.
The script where you play victim to DD:
If she bothers you for stuff even after you discontinue these talks, you need to ask for her input into solving the problem of wanting X amount of stuff and having Y amount of money. Or if she wants to go out with friends, you need to ask for her input into how she will manage her social life as well as performing in school -- you need to see her calendar and her schedule for the week when she is asking to go out. Her weekly times/dates /events should be on the family calendar anyway. Don't come out with a load of rhetorical sounding questions when asking her how she is going to fit it all in. You want to convey belief in her ability to juggle everything, not a dog in the manger attitude or the expectation that she will fail. Just ask to see her proposed schedule, her week's homework and tests that she knows of, any record of long term assignments that are due, and ask her to point to the blocks of time she has reserved for getting work done. Ask her if she thinks her schedule arrangement is realistic. She should make a note on the family calendar of her plans to go out. You could ask the school to provide you with weekly feedback on homework handed in just to make sure her work is getting done. An email roundup system might be possible.
As an aside, at this point she is right on the cusp of being legal in clubs, etc. and making a point about being a minor comes across as you throwing your weight around. She may find clubbing is less attractive if it doesn't appear to wind you up.
She needs help establishing a solid sense of the passage of time and sticking to a schedule, not to have her feelings examined by someone with a huge stake in her answers who gives the impression that there are wrong and right feelings. What you need to do is put it all back into her lap, asking her to come up with solutions to questions of stuff-money/want-need, and inviting her to make her own decisions wrt time management, balancing the fact that she is in school and expected to produce homework with her desire to keep up with friends. The choice is really between fueling the drama vs. respecting DD enough to allow her space/respecting DD enough to work out her own solutions. The way to get there is to use the calendar where everyone meets as equals.
The foundation of getting rid of the drama is consciousness of boundaries on your part, along with which will develop your ability to recognise how drama rears its ugly head, and to make a conscious decision to squelch it.