It's weird seeing puberty as an adult woman rather than having to go through it as the actual young woman.
It's tricky. She's not a child anymore, but she definitely isnt an adult. She may feel she wants to have the freedom and independence of an adult but she doesn't realise that the tough stuff and dangers of adult life would come with that. She wants to be all grown up, but secretly it's scary and uncertain at the moment and she still likes many of the things she liked a mere 6 months ago!
Meanwhile, the child you have loved and cared for and nurtured is turning into a hormonal monster who is unpredictable, all communication channels seem mixed up, some days you can't say the right thing, another day she wants hugs on the sofa and watching Netflix with you. But overall you want to still love and protect her, whilst encouraging her and supporting her.
We have been through it, but just like when we were there.... There is no way that she will believe that you have a clue about friendships, boys, fashion, being popular! Remember we're ancient to them! 😂
I would say just what a lot of other replies say - pick your battles, concentrate on keeping her literally safe and out of danger.... The state of her room and the bizarre fashion & make up aren't die in the ditch issues.
But there are boundaries - you respect her privacy and the freedoms that are appropriate for her age. In return she must return that respect in how she interacts with her family members and not abuse the limits of the freedoms she has.
You can even try to open lines of communication sometimes when it could be all too much in her hormonal mind to actually admit she needs to talk e.g she yells 'you wouldn't understand!' , you could try calmly sitting down or stay still with open body language and reply 'im not sure I do, can you tell me more about this so I can?'. Then listen, give her space to speak, and don't judge, just keep on using open questions and get her to find the answers with your support. It won't work every time.... She'll blow up and storm off a lot - but you will be signalling that you are there and are open to listen if she needs it.
She's testing boundaries and bouncing off the people she feels safest to test things out with. So in a bizarre way it's a compliment and reassuring that she's pushing back at you, because she trusts you won't just give up on her. Remember, all your life you have been like a super hero to her and have strength and reliability, sadly in her brain she won't realise that some of her actions are quite upsetting and at times hurtful. ☹️
Cheer her on, be there as a non judgemental sounding board and shoulder to cry on when necessary, be there for advice on puberty stuff like bras and spots and periods, offer those more grown up treats compared to the more childish ones...but let her take the lead because she may surprise you and want to do something together that you would have thought would be seen as 'too childish' (it probably would have been denounced as such if you dared suggest it! 😂).
I think overall it's roll with the punches as it were.... Cherish those days of sanity when you have a pleasant child, grit your teeth and just get the basics achieved on the days when you have the monster pubescent creature stomping around the house! Remember, you survived the toddler stage.... You can do this too! X