Right now she needs education.

You give her six months to learn how to be an adult and you decide THEN if she passes the program or if you bump her back a grade and you move on.

Tell her to educate herself on what it means to be a wife and a mother, because right now you have NO CONFIDENCE that she is capable of performign etiher role and there ARE others out there than CAN do it.

TEll her the answers are in those two books i noted above.