If you decided to homeschool, here is a word of encouragement. We moved when my DD was in 4th grade. We didn't like the school options here so decided to homeschool for a few years. Well, she is heading into high school, and we are still homeschooling. She has clearly stated that she never wants to go back to public school.
She has several friends in the local public middle School. They do a lot of things together on the weekends, church stuff, and other activities. My DD is both annoyed and amazed at the amount of time they waste on social maneuvering and just surviving an average school day. A few of them are just counting the days till they can escape.
I had an interesting converstation with one of them last weekend. She hates school but loves learning. Its an odd contradiction. I like to take this girl with us to museums and places when we she is out of school. She likes coming along so she can have fun learning without getting picked on.
Several of these friends wish they were homeschooled. They see that my DD can get her school work done in much less time then they spend in the school building. She has extra time to volunteer, work on thing she enjoys and is already developing expertise in the area where she wants to work. She is naturally doing the things that will help her get scholarships and other opportunities.
Hope it works out and you find the best way to help your DD.
In many ways this sounds like us too. Our DD was homeschooled from 4th grade on. She was able to have so many more opportunities because of it (as you said, volunteer work, "field trips" of our own design generally accompanied by friends, etc.)
Her best friend (and recent maid of honor

) was in public school and desparately wanted to homeschool. Middle school and high school were very difficult for her. She was a very well behaved girl who wasn't into partying and some of the other stuff that was prevalent. Her mother worked for the school district in the office. While she knew we homeschooled, she was just uncomfortable about what people might say (and kept hearing over and over how that wasn't the way to deal with the problem - that the girl needed to learn how to handle it).
This went on for years until her DD was in the eleventh grade. Her daughter was basically being stalked in school by a guy she had gone out with who wanted "more" than she was willing to do so she had told him that she didn't want to go out with him anymore. She's a beautiful girl, and he and his friends harrassed her constantly. School administration pretty much did nothing. Finally, something happened (I don't remember exactly what), but they pulled her and her two siblings and never looked back.
She's nearly though with college and doing great. Interestingly enough, she wants to be a teacher. The son is a high school student now who is very active in his youth group and has a part-time job. The younger daughter is starting high school and doing quite well. She was quite the joiner/follower in public school, and her behavior had gotten to the point where being around her wasn't a pleasure at all. That changed almost immediately after she was removed from the cattiness that was her peer group.
Everybody has to choose what is best for their own child, and I never encourage anybody to make one choice over the other. I just want them to know that there are options, and homeschooling isn't a "second best" choice. It's equally as viable as public school (and many people find it to be a much better choice for them

).