As others have said, emancipation is the move here. Assuming legal guardianship means that until she’s 18 you are FULLY responsible for her well being and her actions and as great of a kid as she may be, that is not something you probably want to risk. She’s young, but unfortunately it is time for her to start learning about how to be a responsible independent adult and you can help her with that once she is emancipated. Once enrolled in school, inquire with the school counselor about MO OP, the Missouri Options program to get her an actual diploma even though she is significantly behind on required graduation credits, that program is the catch up fast track to an actual diploma, not a GED(a GED can potentially disqualify her for future endeavors). If you need help, DM me. I work in school counseling and have assisted students with similar life circumstances. It’s a difficult situation to be in, but I’ve seen many kids rise from the ashes and turn out to be fabulous young adults. Thank you for caring.