Our greatest supporters in our HE journey are educators - my mum is a primary school teacher; and my uncle is a secondary school teacher.
Read John Holt books too - he was an educator in the US.
Is your main hope for your DD that she gets lots of qualifications?
Mine for my DDs is that they are happy; confident and successful by whatever measure they set themselves...which may be very different to how other people measure success!
If they need qualifications for whatever they find they want to do in life, I am confident they will get them easily because learning something you have a great interest in is very easy and happens very quickly.
And I know a lot of AEd adults who have gone on to do university degrees, PhDs as well as become very skilled workers in other, less academic areas.
And I read lots of interesting articles about how children learn and how a lot of what we're told we need to learn in school is not necessarily vital to doing what you want in life...particularly when you consider that most of what you memorise for exams, you forget soon afterwards unless it carried great significance for you or you use that information regularly.
I used not to trust this process at all, but my mum encouraged me to research it more, and then I started meeting up with AEors, and now I see my own children learning masses and masses - way more than they would be being expected to at this level were they in school. It's far easier for me to trust in it now, 7+ years after I first heard that HE was even an option!
Woudl you send her to a different school if you didn't decide to HE?
If so, would it be an option to take her out of school for a year or a term while you and she deschooled, met up with other HEors, read as much as you possibly could about how children learn naturally etc., and then made a decision to either keep on with the HE, or send her to a different, more supportive school?