Stop assuming and thinking the worst, girl!
A will still be able to eat and try all the foods she loves without limitations. She will bite and eat on the side of her mouth instead of the front. She will be fine and will adjust quickly once the extractions heal.
Keeping her from public school because she might get teased is a bit extreme. We have to think rationally instead of emotionally. A's strong and she won't be the only kiddo in school with missing teeth - either because they fell out naturally, they accidentally got knocked out or because they had them removed just like her. Everyone is different in some way. Kids go to school who are diabetic, have learning disabilities, have allergies etc; they are treated like every other kid.
I love you like my own sister and I understand it is your motherly instinct to protect her at all costs but you cannot keep her sheltered from every day life forever. We can't let our children miss out on life because we impose our own fears or insecurities on them. She's strong. She's a fighter. She's going to be the same ol' feisty go-getter A that she's has grown to be.
Let's just hope that she doesn't find a sudden passion for whistling ;) <3