There are some very good books on the subject. Those are good to have for field manuals and positive IDs IMHO. If she doesn't have a copy already and you are ever looking for a gift for her, many like the Peterson Field Guide to Wild Edible Plants of the Eastern US. In case it's something of interest to her.
https://www.goodreads.com/book/show/378203.A_Field_Guide_to_Edible_Wild_Plants
It has photos instead of illustrations.
How fortunate you have been to be home schooled. I went through the public school system, and earned a 5 year agricultural degree in Animal and Veterinary Sciences at a land grant university. My pastor and church asked me to be on their church school board. I was up front and honest. I let them know that I have known students who were public, christian, and home schooled. I also did a research paper comparing standardized tests of each category. I told them that there are plenty of exceptions, however I would have to recommend home schooling to any parents who wanted my opinion. Regardless, they still wanted me on the board.
So, for some very important reasons, I recommend home schooling whenever possible.