Returning to public school... mom is nervous wreck / DD not nervous enough!

My oldest DD's school career has been a roller coaster since 1st grade.  By 3rd grade we finally a little bit of an answer when she was diagnosed AD/HD inn and GAD ( generalized anxiety disorder) 504 in place.  With meds she was a little more secure and daily functioning improved, but most of her school work did not.  She would be missing a majority of assignments, most of them done just not turned in, classwork and homework grades Ds and Fs but test scores A's.  Teachers would give her the speech about consequences but not follow through.  I requested her be retained in 5th grade because I didn't think she had the study/learning skills to be successful in Middle School, school refused because she tested at or above grade level.  Middle school was more of the same, no follow through from school,  accomodations allowed for extended time on assignments, which she used to complete the bulk of classwork/homework during the last week or 2 of the semester to allow her to pass.  8th grade was academically a little better but emotionally she was worse.

My DD didn't do well her freshman year in high school.  First semester she was behind / borderline failing all classes, saw no reason to do the work, expecting that as usual she could just turn everything in at the end of the semester or that her test scores would pull her through; she passed 2 classes.  Anxiety was ramping up again, best friend moved away, overwhelmed at large not well supervised school, she missed more days than she attended second semester many times because she would be so anxious she was throwing up either before school or during first 2 hours of school and sent home, which then evolved into tearful refusal to go so we pulled her out of public school, tried charter schools but none accepted her for a variety of reasons so we enrolled her in public charter on-line, same bad study skills, same borderline performance - mainly due to no interest and not able to socialize, even when rewards of extra social time, extended curfew were there. She complained and defiantly claimed that it was everyone else's fault and accepted no responsibility for refusal to even attempt schoolwork and was angry that we would apply consequences to refusal to complete schoolwork.

With a lot of negotiating and support she would figure out what the bare minimum of work needed to achieve a 60% (59% =failing) and has finally completed her freshman year ( 16 months including summer classes).  For the last 6 months she has been begging to go back to public school.  Knowing the cyber school wasn't the right answer for her despite lots of supports by school staff, we set the requirement that she be caught up credit wise to the grade she should be.

So next week, we are heading back to the public school, primarily out of desperation, but willing to keep to our agreement that she could return when she was caught up credit wise.  I am a nervous wreck and don't see it being any more successful this time around.  DD on the other hand doesn't understand why I'm worried she is going to do fine, no plans, just because she says she is.

I'm just hoping that we can survive this semester and then she has the option of getting her GED, or testing out.  I really think she has the ability to be successfull in the grand scheme of life,  but not the skill to be objective and plan how to be successful, and school is definately not a match for her.  I think many of these issue are typical 15 yr old girl issues only she takes everything to an extreme.

I'm not sure that I even have a question to ask but more needed a chance to lay it all out and see if anyone has advice or similar experiences.