No, she must be at least 18 in order to get married without parental permission or have a court order.
Idaho is a "no exceptions" state. So, no.
With the permission of the parents.
With parental permission, yes.
Yes, the parents can give permission. It does not absolve them of responsibility.
Only if you have parental permission. As a minor your parents are still responsible for you.
You have to be 18.
Legally, not without his father's permission.
If your parents have legal custody of you, and presumably they do, you will need their permission.
Idaho does not allow anyone under the age of 18 to marry without consent from their parents/legal guardian, which in this person's case (I'm just assuming) would probably be an agency along the lines of the Department of Social Services (and chances are they would be very reluctant to give permission). You can call the county clerk's office and ask them who would have to sign for someone in foster care. Oh, by the way you would have to have your parents permission too. The good news is, that once you're 18, you can get married with no problem!
No, a child does not emancipate you in any state, only regarding your health and everything regarding the child. You still have to do as your parents say and can not move out without parental permission.
YES you can buy what ever you like ...
As long as they have parental permission. Otherwise they need to live where their parents say.